Bài 34: ArrayList trong Java (1)

[tadangbds]

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package hoc[/color][color=#007700].[/color][color=#0000bb]java[/color][color=#007700];    [/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]arraylist[/color][color=#007700];[/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700];    public class [/color][color=#0000bb]unit34 [/color][color=#007700]{public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {[/color][color=#0000bb]scanner in [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);[/color][color=#0000bb]int sotu[/color][color=#007700];[/color][color=#0000bb]arraylist[/color][color=#007700]<[/color][color=#0000bb]tudien[/color][color=#007700]> [/color][color=#0000bb]listtudien [/color][color=#007700]= new [/color][color=#0000bb]arraylist[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhap so tu cua tu dien: "[/color][color=#007700]);[/color][color=#0000bb]sotu [/color][color=#007700]= [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();[/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]sotu[/color][color=#007700]; [/color][color=#0000bb]i[/color][color=#007700]++) {[/color][color=#0000bb]tudien td [/color][color=#007700]= new [/color][color=#0000bb]tudien[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhap tu: "[/color][color=#007700]);[/color][color=#0000bb]td[/color][color=#007700].[/color][color=#0000bb]settu[/color][color=#007700]([/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]());[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nghia cua tu: "[/color][color=#007700]);[/color][color=#0000bb]td[/color][color=#007700].[/color][color=#0000bb]setnghia[/color][color=#007700]([/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]());[/color][color=#0000bb]listtudien[/color][color=#007700].[/color][color=#0000bb]add[/color][color=#007700]([/color][color=#0000bb]td[/color][color=#007700]);}[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"moi ban nhap tu can tra: "[/color][color=#007700]);[/color][color=#0000bb]string tratu [/color][color=#007700]= [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]sotu[/color][color=#007700]; [/color][color=#0000bb]i[/color][color=#007700]++) {if ([/color][color=#0000bb]tratu[/color][color=#007700].[/color][color=#0000bb]equals[/color][color=#007700]([/color][color=#0000bb]listtudien[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]gettu[/color][color=#007700]())) {[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nghia cua tu: "[/color][color=#007700]);[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#0000bb]listtudien[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]getnghia[/color][color=#007700]());}}    }}    class [/color][color=#0000bb]tudien [/color][color=#007700]{private [/color][color=#0000bb]string tu[/color][color=#007700];private [/color][color=#0000bb]string nghia[/color][color=#007700];    public [/color][color=#0000bb]string gettu[/color][color=#007700]() {return [/color][color=#0000bb]tu[/color][color=#007700];}    public [/color][color=#0000bb]void settu[/color][color=#007700]([/color][color=#0000bb]string tu[/color][color=#007700]) {[/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]tu [/color][color=#007700]= [/color][color=#0000bb]tu[/color][color=#007700];}    public [/color][color=#0000bb]string getnghia[/color][color=#007700]() {return [/color][color=#0000bb]nghia[/color][color=#007700];}    public [/color][color=#0000bb]void setnghia[/color][color=#007700]([/color][color=#0000bb]string nghia[/color][color=#007700]) {[/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]nghia [/color][color=#007700]= [/color][color=#0000bb]nghia[/color][color=#007700];}    }[/color] 

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[thangbonnuoc]

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package java_java[/color][color=#007700]; [/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]arraylist[/color][color=#007700];[/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700]; public class [/color][color=#0000bb]tudien [/color][color=#007700]{    public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {        [/color][color=#0000bb]dstu ds [/color][color=#007700]= new [/color][color=#0000bb]dstu[/color][color=#007700]();               [/color][color=#0000bb]ds[/color][color=#007700].[/color][color=#0000bb]input[/color][color=#007700]();        [/color][color=#0000bb]ds[/color][color=#007700].[/color][color=#0000bb]output[/color][color=#007700]();        [/color][color=#0000bb]ds[/color][color=#007700].[/color][color=#0000bb]timkiem[/color][color=#007700]([/color][color=#dd0000]"hello"[/color][color=#007700]);    }} class [/color][color=#0000bb]tu [/color][color=#007700]{    private [/color][color=#0000bb]string tu[/color][color=#007700];    private [/color][color=#0000bb]string nghia[/color][color=#007700];     public [/color][color=#0000bb]string gettu[/color][color=#007700]() {        return [/color][color=#0000bb]tu[/color][color=#007700];    }     public [/color][color=#0000bb]void settu[/color][color=#007700]([/color][color=#0000bb]string tu[/color][color=#007700]) {        [/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]tu [/color][color=#007700]= [/color][color=#0000bb]tu[/color][color=#007700];    }     public [/color][color=#0000bb]string getnghia[/color][color=#007700]() {        return [/color][color=#0000bb]nghia[/color][color=#007700];    }     public [/color][color=#0000bb]void setnghia[/color][color=#007700]([/color][color=#0000bb]string nghia[/color][color=#007700]) {        [/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]nghia [/color][color=#007700]= [/color][color=#0000bb]nghia[/color][color=#007700];    }} class [/color][color=#0000bb]dstu [/color][color=#007700]{    [/color][color=#0000bb]arraylist listword [/color][color=#007700]= new [/color][color=#0000bb]arraylist[/color][color=#007700]();    [/color][color=#0000bb]scanner input [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);     public [/color][color=#0000bb]void input[/color][color=#007700]() {        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập số lượng từ"[/color][color=#007700]);        [/color][color=#0000bb]int n [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();         [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();         for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]n[/color][color=#007700]; [/color][color=#0000bb]i[/color][color=#007700]++) {            [/color][color=#0000bb]tu x [/color][color=#007700]= new [/color][color=#0000bb]tu[/color][color=#007700]();            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập thông tin từ thứ " [/color][color=#007700]+ [/color][color=#0000bb]i[/color][color=#007700]);            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"từ:"[/color][color=#007700]);            [/color][color=#0000bb]string tux [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();             [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nghĩa:"[/color][color=#007700]);            [/color][color=#0000bb]string nghiax [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();             [/color][color=#0000bb]x[/color][color=#007700].[/color][color=#0000bb]settu[/color][color=#007700]([/color][color=#0000bb]tux[/color][color=#007700]);            [/color][color=#0000bb]x[/color][color=#007700].[/color][color=#0000bb]setnghia[/color][color=#007700]([/color][color=#0000bb]nghiax[/color][color=#007700]);             [/color][color=#ff8000]// them vao list            [/color][color=#0000bb]listword[/color][color=#007700].[/color][color=#0000bb]add[/color][color=#007700]([/color][color=#0000bb]x[/color][color=#007700]);         }    }    public [/color][color=#0000bb]void output[/color][color=#007700]()    {        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"dữ liệu từ điển"[/color][color=#007700]);        for([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]listword[/color][color=#007700].[/color][color=#0000bb]size[/color][color=#007700](); [/color][color=#0000bb]i[/color][color=#007700]++)        {            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"từ thứ "[/color][color=#007700]+[/color][color=#0000bb]i[/color][color=#007700]);            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"từ:"[/color][color=#007700]+[/color][color=#0000bb]listword[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]gettu[/color][color=#007700]()+[/color][color=#dd0000]" nghĩa:"[/color][color=#007700]+[/color][color=#0000bb]listword[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]getnghia[/color][color=#007700]());        }    }       public [/color][color=#0000bb]void timkiem[/color][color=#007700]([/color][color=#0000bb]string tutk[/color][color=#007700])    {        for([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]listword[/color][color=#007700].[/color][color=#0000bb]size[/color][color=#007700](); [/color][color=#0000bb]i[/color][color=#007700]++)        {            if([/color][color=#0000bb]tutk[/color][color=#007700].[/color][color=#0000bb]compareto[/color][color=#007700]([/color][color=#0000bb]listword[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]gettu[/color][color=#007700]()) == [/color][color=#0000bb]0[/color][color=#007700])            {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"tu can tim"[/color][color=#007700]);                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"từ:"[/color][color=#007700]+[/color][color=#0000bb]listword[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]gettu[/color][color=#007700]()+[/color][color=#dd0000]" nghĩa:"[/color][color=#007700]+[/color][color=#0000bb]listword[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]getnghia[/color][color=#007700]());            }        }    }}[/color] 

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[gackiem12781]

mới học java mong được các p rồ ở đây chỉ giáo
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package tudien[/color][color=#007700]; [/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]arraylist[/color][color=#007700];[/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700]; class [/color][color=#0000bb]dich [/color][color=#007700]{     private [/color][color=#0000bb]string tu[/color][color=#007700], [/color][color=#0000bb]nghia[/color][color=#007700];     public [/color][color=#0000bb]string gettu[/color][color=#007700]() {        return [/color][color=#0000bb]tu[/color][color=#007700];    }     public [/color][color=#0000bb]void settu[/color][color=#007700]([/color][color=#0000bb]string tu[/color][color=#007700]) {        [/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]tu [/color][color=#007700]= [/color][color=#0000bb]tu[/color][color=#007700];    }     public [/color][color=#0000bb]string getnghia[/color][color=#007700]() {        return [/color][color=#0000bb]nghia[/color][color=#007700];    }     public [/color][color=#0000bb]void setnghia[/color][color=#007700]([/color][color=#0000bb]string nghia[/color][color=#007700]) {        [/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]nghia [/color][color=#007700]= [/color][color=#0000bb]nghia[/color][color=#007700];    }} public class [/color][color=#0000bb]tudien [/color][color=#007700]{     public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {        [/color][color=#0000bb]scanner nhap [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);        [/color][color=#0000bb]arraylist[/color][color=#007700]<[/color][color=#0000bb]dich[/color][color=#007700]> [/color][color=#0000bb]vdic [/color][color=#007700]= new [/color][color=#0000bb]arraylist[/color][color=#007700]();        [/color][color=#0000bb]int a[/color][color=#007700];        [/color][color=#0000bb]string b[/color][color=#007700], [/color][color=#0000bb]c[/color][color=#007700], [/color][color=#0000bb]d[/color][color=#007700], [/color][color=#0000bb]e[/color][color=#007700];        do {            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"menu"[/color][color=#007700]);            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"1.thêm từ vào vdic:"[/color][color=#007700]);            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"2.tìm từ trong vdic:"[/color][color=#007700]);            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"3.in ra tất cả danh sách trong vdic:"[/color][color=#007700]);            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"4.đổi từ trong danh sách:"[/color][color=#007700]);            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"5.xóa từ trong danh sách:"[/color][color=#007700]);            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"6.thoát:"[/color][color=#007700]);            [/color][color=#0000bb]a [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();             switch ([/color][color=#0000bb]a[/color][color=#007700]) {                case [/color][color=#0000bb]1[/color][color=#007700]:                    do {                        [/color][color=#0000bb]dich vd [/color][color=#007700]= new [/color][color=#0000bb]dich[/color][color=#007700]();                        [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();                        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập từ:"[/color][color=#007700]);                        [/color][color=#0000bb]vd[/color][color=#007700].[/color][color=#0000bb]settu[/color][color=#007700]([/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]());                        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập nghĩa:"[/color][color=#007700]);                        [/color][color=#0000bb]vd[/color][color=#007700].[/color][color=#0000bb]setnghia[/color][color=#007700]([/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]());                        [/color][color=#0000bb]vdic[/color][color=#007700].[/color][color=#0000bb]add[/color][color=#007700]([/color][color=#0000bb]vd[/color][color=#007700]);                        [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();                        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"bạn có muốn nhập thêm:(c/k)"[/color][color=#007700]);                        [/color][color=#0000bb]b [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();                    } while ([/color][color=#0000bb]b[/color][color=#007700].[/color][color=#0000bb]equals[/color][color=#007700]([/color][color=#dd0000]"c"[/color][color=#007700]));                    break;                 case [/color][color=#0000bb]2[/color][color=#007700]:                     [/color][color=#0000bb]boolean check [/color][color=#007700]= [/color][color=#0000bb]false[/color][color=#007700];                    [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();                    [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập từ cần tìm:"[/color][color=#007700]);                    [/color][color=#0000bb]c [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();                    for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]vdic[/color][color=#007700].[/color][color=#0000bb]size[/color][color=#007700](); [/color][color=#0000bb]i[/color][color=#007700]++) {                        [/color][color=#0000bb]dich vd [/color][color=#007700]= new [/color][color=#0000bb]dich[/color][color=#007700]();                        [/color][color=#0000bb]vd [/color][color=#007700]= ([/color][color=#0000bb]dich[/color][color=#007700]) [/color][color=#0000bb]vdic[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]);                        if ([/color][color=#0000bb]vd[/color][color=#007700].[/color][color=#0000bb]gettu[/color][color=#007700]().[/color][color=#0000bb]equals[/color][color=#007700]([/color][color=#0000bb]c[/color][color=#007700])) {                            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#0000bb]vd[/color][color=#007700].[/color][color=#0000bb]getnghia[/color][color=#007700]());                            [/color][color=#0000bb]check [/color][color=#007700]= [/color][color=#0000bb]true[/color][color=#007700];                        }                    }                    if (![/color][color=#0000bb]check[/color][color=#007700]) {                        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"không  tìm thấy:"[/color][color=#007700]);                    }                    break;                case [/color][color=#0000bb]3[/color][color=#007700]:                    for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]vdic[/color][color=#007700].[/color][color=#0000bb]size[/color][color=#007700](); [/color][color=#0000bb]i[/color][color=#007700]++) {                        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" từ: " [/color][color=#007700]+ [/color][color=#0000bb]vdic[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]gettu[/color][color=#007700]() + [/color][color=#dd0000]" nghĩa: " [/color][color=#007700]+ [/color][color=#0000bb]vdic[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]getnghia[/color][color=#007700]());                        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" "[/color][color=#007700]);                    }                    break;                case [/color][color=#0000bb]4[/color][color=#007700]:                    [/color][color=#0000bb]boolean check2 [/color][color=#007700]= [/color][color=#0000bb]false[/color][color=#007700];                    [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();                    [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập từ cần đổi:"[/color][color=#007700]);                    [/color][color=#0000bb]c [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();                    for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]vdic[/color][color=#007700].[/color][color=#0000bb]size[/color][color=#007700](); [/color][color=#0000bb]i[/color][color=#007700]++) {                        [/color][color=#0000bb]dich vd [/color][color=#007700]= new [/color][color=#0000bb]dich[/color][color=#007700]();                        [/color][color=#0000bb]vd [/color][color=#007700]= ([/color][color=#0000bb]dich[/color][color=#007700]) [/color][color=#0000bb]vdic[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]);                        if ([/color][color=#0000bb]vd[/color][color=#007700].[/color][color=#0000bb]gettu[/color][color=#007700]().[/color][color=#0000bb]equals[/color][color=#007700]([/color][color=#0000bb]c[/color][color=#007700])) {                            [/color][color=#0000bb]vdic[/color][color=#007700].[/color][color=#0000bb]remove[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]);                                                                    [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();                            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"đổi thành:"[/color][color=#007700]);                                [/color][color=#0000bb]vd[/color][color=#007700].[/color][color=#0000bb]settu[/color][color=#007700]([/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]());                                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập nghĩa:"[/color][color=#007700]);                                [/color][color=#0000bb]vd[/color][color=#007700].[/color][color=#0000bb]setnghia[/color][color=#007700]([/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]());                                [/color][color=#0000bb]vdic[/color][color=#007700].[/color][color=#0000bb]add[/color][color=#007700]([/color][color=#0000bb]vd[/color][color=#007700]);                             [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"đổi thành công:"[/color][color=#007700]);                            [/color][color=#0000bb]check2 [/color][color=#007700]= [/color][color=#0000bb]true[/color][color=#007700];                        }                    }                    if (![/color][color=#0000bb]check2[/color][color=#007700]) {                        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"không tìm thấy từ đó trong danh sách:"[/color][color=#007700]);                    }                    break;                case [/color][color=#0000bb]5[/color][color=#007700]:                    [/color][color=#0000bb]boolean check3 [/color][color=#007700]= [/color][color=#0000bb]false[/color][color=#007700];                    [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();                    [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập từ cần xóa:"[/color][color=#007700]);                    [/color][color=#0000bb]c [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();                    for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]vdic[/color][color=#007700].[/color][color=#0000bb]size[/color][color=#007700](); [/color][color=#0000bb]i[/color][color=#007700]++) {                        [/color][color=#0000bb]dich vd [/color][color=#007700]= new [/color][color=#0000bb]dich[/color][color=#007700]();                        [/color][color=#0000bb]vd [/color][color=#007700]= ([/color][color=#0000bb]dich[/color][color=#007700]) [/color][color=#0000bb]vdic[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]);                        if ([/color][color=#0000bb]vd[/color][color=#007700].[/color][color=#0000bb]gettu[/color][color=#007700]().[/color][color=#0000bb]equals[/color][color=#007700]([/color][color=#0000bb]c[/color][color=#007700])) {                            [/color][color=#0000bb]vdic[/color][color=#007700].[/color][color=#0000bb]remove[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]);                            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"xóa thành công:"[/color][color=#007700]);                            [/color][color=#0000bb]check3 [/color][color=#007700]= [/color][color=#0000bb]true[/color][color=#007700];                        }                    }                    if (![/color][color=#0000bb]check3[/color][color=#007700]) {                        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"không  tìm thấy:"[/color][color=#007700]);                    }                    break;                case [/color][color=#0000bb]6[/color][color=#007700]:                    break;            }            [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"tiếp tục:(c/k)"[/color][color=#007700]);            [/color][color=#0000bb]c [/color][color=#007700]= [/color][color=#0000bb]nhap[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();        } while ([/color][color=#0000bb]c[/color][color=#007700].[/color][color=#0000bb]equals[/color][color=#007700]([/color][color=#dd0000]"c"[/color][color=#007700]));    }}[/color] 

</blockquote></div>
</div>
</div>

bài của bạn khi nhập xong 1 yêu cầu thì hỏi (c/k) tiếp tục chương trình nhưng khi nhập vô thì phải nhấn enter để tránh bị trôi do dòng system.nextline().bỏ đi thì lại không đc, làm sao khắc phục chỗ nhấn enter rồi mới nhập bạn

[thanhluantk]

[color=#000000]
package baitap[/color][color=#007700];[/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]arraylist[/color][color=#007700];[/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700];class [/color][color=#0000bb]tudien[/color][color=#007700]{[/color][color=#0000bb]string tu[/color][color=#007700], [/color][color=#0000bb]nghia[/color][color=#007700];public [/color][color=#0000bb]void setnghia[/color][color=#007700]([/color][color=#0000bb]string nghia[/color][color=#007700]) {[/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]nghia [/color][color=#007700]= [/color][color=#0000bb]nghia[/color][color=#007700];}public [/color][color=#0000bb]void settu[/color][color=#007700]([/color][color=#0000bb]string tu[/color][color=#007700]) {[/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]tu [/color][color=#007700]= [/color][color=#0000bb]tu[/color][color=#007700];}public [/color][color=#0000bb]string getnghia[/color][color=#007700]() {return [/color][color=#0000bb]nghia[/color][color=#007700];}public [/color][color=#0000bb]string gettu[/color][color=#007700]() {return [/color][color=#0000bb]tu[/color][color=#007700];}}public class [/color][color=#0000bb]unit34 [/color][color=#007700]{public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {[/color][color=#0000bb]arraylist[/color][color=#007700]<[/color][color=#0000bb]tudien[/color][color=#007700]> [/color][color=#0000bb]listtd [/color][color=#007700]= new [/color][color=#0000bb]arraylist[/color][color=#007700]();[/color][color=#0000bb]scanner intext [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);[/color][color=#0000bb]scanner innum [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nhap so tu cua tu dien "[/color][color=#007700]);[/color][color=#0000bb]int n[/color][color=#007700]=[/color][color=#0000bb]innum[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();for([/color][color=#0000bb]int i[/color][color=#007700]=[/color][color=#0000bb]0[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]<[/color][color=#0000bb]n[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]++){[/color][color=#0000bb]tudien x [/color][color=#007700]= new [/color][color=#0000bb]tudien[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700](([/color][color=#0000bb]i[/color][color=#007700]+[/color][color=#0000bb]1[/color][color=#007700])+[/color][color=#dd0000]": "[/color][color=#007700]);[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"tu: "[/color][color=#007700]);[/color][color=#0000bb]x[/color][color=#007700].[/color][color=#0000bb]tu[/color][color=#007700]=[/color][color=#0000bb]intext[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nghia: "[/color][color=#007700]);[/color][color=#0000bb]x[/color][color=#007700].[/color][color=#0000bb]nghia[/color][color=#007700]=[/color][color=#0000bb]intext[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();[/color][color=#0000bb]x[/color][color=#007700].[/color][color=#0000bb]settu[/color][color=#007700]([/color][color=#0000bb]x[/color][color=#007700].[/color][color=#0000bb]tu[/color][color=#007700]);[/color][color=#0000bb]x[/color][color=#007700].[/color][color=#0000bb]setnghia[/color][color=#007700]([/color][color=#0000bb]x[/color][color=#007700].[/color][color=#0000bb]nghia[/color][color=#007700]);[/color][color=#0000bb]listtd[/color][color=#007700].[/color][color=#0000bb]add[/color][color=#007700]([/color][color=#0000bb]x[/color][color=#007700]);}[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"thong tin danh sach tu vua nhap"[/color][color=#007700]);for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]listtd[/color][color=#007700].[/color][color=#0000bb]size[/color][color=#007700](); [/color][color=#0000bb]i[/color][color=#007700]++) {[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"tu thu "[/color][color=#007700]+([/color][color=#0000bb]i[/color][color=#007700]+[/color][color=#0000bb]1[/color][color=#007700])+[/color][color=#dd0000]" :"[/color][color=#007700]);[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"---tu: "[/color][color=#007700]+[/color][color=#0000bb]listtd[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]gettu[/color][color=#007700]()+[/color][color=#dd0000]"
nghia: "[/color][color=#007700]+[/color][color=#0000bb]listtd[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]getnghia[/color][color=#007700]()+[/color][color=#dd0000]"
"[/color][color=#007700]);}[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhap tu can tra"[/color][color=#007700]);[/color][color=#0000bb]string seach [/color][color=#007700]= [/color][color=#0000bb]intext[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]listtd[/color][color=#007700].[/color][color=#0000bb]size[/color][color=#007700](); [/color][color=#0000bb]i[/color][color=#007700]++) {if([/color][color=#0000bb]seach[/color][color=#007700].[/color][color=#0000bb]equalsignorecase[/color][color=#007700]([/color][color=#0000bb]listtd[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]gettu[/color][color=#007700]())==[/color][color=#0000bb]true[/color][color=#007700]){[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"nghia la:"[/color][color=#007700]);[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#0000bb]listtd[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]getnghia[/color][color=#007700]());}}}}[/color] 

[mayina_ba]

có khác đề bài 1 chút

[color=#000000]
[/color][color=#ff8000]/** to change this license header, choose license headers in project properties.* to change this template file, choose tools | templates* and open the template in the editor.*/    [/color][color=#0000bb]package javaapplication1[/color][color=#007700];[/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]arraylist[/color][color=#007700];[/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700];[/color][color=#ff8000]/**** @author leethuc*/[/color][color=#007700]class [/color][color=#0000bb]dictionary [/color][color=#007700]{     private [/color][color=#0000bb]string root[/color][color=#007700];    private [/color][color=#0000bb]string mean[/color][color=#007700];        public [/color][color=#0000bb]string getroot[/color][color=#007700]() {        return [/color][color=#0000bb]root[/color][color=#007700];    }        public [/color][color=#0000bb]void setroot[/color][color=#007700]([/color][color=#0000bb]string root[/color][color=#007700]) {        [/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]root [/color][color=#007700]= [/color][color=#0000bb]root[/color][color=#007700];    }        public [/color][color=#0000bb]string getmean[/color][color=#007700]() {        return [/color][color=#0000bb]mean[/color][color=#007700];    }        public [/color][color=#0000bb]void setmean[/color][color=#007700]([/color][color=#0000bb]string mean[/color][color=#007700]) {        [/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]mean [/color][color=#007700]= [/color][color=#0000bb]mean[/color][color=#007700];    }    public [/color][color=#0000bb]void input[/color][color=#007700](){                 [/color][color=#0000bb]scanner input [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);         [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"\tnhap tu tieng anh: "[/color][color=#007700]);         [/color][color=#0000bb]setroot[/color][color=#007700]([/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]());         [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"\tnhap nghia tieng viet: "[/color][color=#007700]);         [/color][color=#0000bb]setmean[/color][color=#007700]([/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]());    }   }public class [/color][color=#0000bb]javaapplication1 [/color][color=#007700]{    public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {        [/color][color=#0000bb]scanner input [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);        [/color][color=#0000bb]arraylist[/color][color=#007700]<[/color][color=#0000bb]dictionary[/color][color=#007700]> [/color][color=#0000bb]dic [/color][color=#007700]= new [/color][color=#0000bb]arraylist[/color][color=#007700]();        while ([/color][color=#0000bb]0 [/color][color=#007700]== [/color][color=#0000bb]0[/color][color=#007700]){            [/color][color=#0000bb]int n[/color][color=#007700];        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"1.thêm vào từ điển"[/color][color=#007700]);        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"2.tra nghĩa tiếng việt"[/color][color=#007700]);        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"3.exit"[/color][color=#007700]);        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"\tchoose a number: "[/color][color=#007700]);        [/color][color=#0000bb]n[/color][color=#007700]=[/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        switch([/color][color=#0000bb]n[/color][color=#007700]){            case [/color][color=#0000bb]1[/color][color=#007700]:                [/color][color=#0000bb]dictionary add [/color][color=#007700]= new [/color][color=#0000bb]dictionary[/color][color=#007700]();                [/color][color=#0000bb]add[/color][color=#007700].[/color][color=#0000bb]input[/color][color=#007700]();                [/color][color=#0000bb]dic[/color][color=#007700].[/color][color=#0000bb]add[/color][color=#007700]([/color][color=#0000bb]add[/color][color=#007700]);                break;                   case [/color][color=#0000bb]2[/color][color=#007700]:                [/color][color=#0000bb]string word[/color][color=#007700];                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"\tnhập một từ cần tra: "[/color][color=#007700]);                [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();                [/color][color=#0000bb]word [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();                [/color][color=#0000bb]int i[/color][color=#007700];                for ([/color][color=#0000bb]i[/color][color=#007700]=[/color][color=#0000bb]0[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]<[/color][color=#0000bb]dic[/color][color=#007700].[/color][color=#0000bb]size[/color][color=#007700]();[/color][color=#0000bb]i[/color][color=#007700]++){                    if([/color][color=#0000bb]dic[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]getroot[/color][color=#007700]() == [/color][color=#0000bb]null [/color][color=#007700]? [/color][color=#0000bb]word [/color][color=#007700]== [/color][color=#0000bb]null [/color][color=#007700]: [/color][color=#0000bb]dic[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]getroot[/color][color=#007700]().[/color][color=#0000bb]equals[/color][color=#007700]([/color][color=#0000bb]word[/color][color=#007700])){                        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" nghĩa của từ "[/color][color=#007700]+ [/color][color=#0000bb]word [/color][color=#007700]+[/color][color=#dd0000]" là: "[/color][color=#007700]+[/color][color=#0000bb]dic[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]getmean[/color][color=#007700]());                        break;                        }                }                if([/color][color=#0000bb]i [/color][color=#007700]== [/color][color=#0000bb]dic[/color][color=#007700].[/color][color=#0000bb]size[/color][color=#007700]()){                     [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" bạn đã đánh sai hoặc từ này chưa có trong từ điển"[/color][color=#007700]);                        }            case [/color][color=#0000bb]3[/color][color=#007700]:                break;        }        }    }}      [/color] 

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[color=#000000]
package baitapvenha[/color][color=#007700];    [/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]arraylist[/color][color=#007700];[/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700];    [/color][color=#ff8000]/** * tạo 1 chương trình từ điển anh - việt nhỏ gồm 1 mảng các từ. mỗi từ có 2 * thuộc tính là "từ" và "nghĩa". số từ của từ điển nhập vào từ bàn phím, nhập * các thông tin của từng từ vào. thêm tính năng tra từ ở phía cuối chương * trình, yêu cầu người dùng nhập từ cần tra nghĩa rồi tìm kiếm, in ra màn hình * nghĩa của từ vừa yêu cầu tìm! */[/color][color=#007700]class [/color][color=#0000bb]tudien [/color][color=#007700]{private [/color][color=#0000bb]string tu[/color][color=#007700];private [/color][color=#0000bb]string nghia[/color][color=#007700];    public [/color][color=#0000bb]void settu[/color][color=#007700]([/color][color=#0000bb]string tu[/color][color=#007700]) {[/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]tu [/color][color=#007700]= [/color][color=#0000bb]tu[/color][color=#007700];}    public [/color][color=#0000bb]string gettu[/color][color=#007700]() {return [/color][color=#0000bb]tu[/color][color=#007700];}    public [/color][color=#0000bb]void setnghia[/color][color=#007700]([/color][color=#0000bb]string nghia[/color][color=#007700]) {[/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]nghia [/color][color=#007700]= [/color][color=#0000bb]nghia[/color][color=#007700];}    public [/color][color=#0000bb]string getnghia[/color][color=#007700]() {return [/color][color=#0000bb]nghia[/color][color=#007700];}}    public class [/color][color=#0000bb]buoi34_arraylist [/color][color=#007700]{static [/color][color=#0000bb]scanner input [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);[/color][color=#0000bb]arraylist[/color][color=#007700]<[/color][color=#0000bb]tudien[/color][color=#007700]> [/color][color=#0000bb]listtudien [/color][color=#007700]= new [/color][color=#0000bb]arraylist[/color][color=#007700]<[/color][color=#0000bb]tudien[/color][color=#007700]>(); public [/color][color=#0000bb]void taotudien[/color][color=#007700]([/color][color=#0000bb]int n[/color][color=#007700]){[/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();for([/color][color=#0000bb]int i[/color][color=#007700]=[/color][color=#0000bb]0[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]<[/color][color=#0000bb]n[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]++){[/color][color=#0000bb]tudien tdien [/color][color=#007700]= new [/color][color=#0000bb]tudien[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"tu thu "[/color][color=#007700]+([/color][color=#0000bb]i[/color][color=#007700]+[/color][color=#0000bb]1[/color][color=#007700])+[/color][color=#dd0000]": 
"[/color][color=#007700]+[/color][color=#dd0000]" => tu:\t"[/color][color=#007700]);[/color][color=#0000bb]tdien[/color][color=#007700].[/color][color=#0000bb]settu[/color][color=#007700]([/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]());[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]" => nghia:\t"[/color][color=#007700]);[/color][color=#0000bb]tdien[/color][color=#007700].[/color][color=#0000bb]setnghia[/color][color=#007700]([/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]());[/color][color=#0000bb]listtudien[/color][color=#007700].[/color][color=#0000bb]add[/color][color=#007700]([/color][color=#0000bb]tdien[/color][color=#007700]);}} public [/color][color=#0000bb]void tratudien[/color][color=#007700]([/color][color=#0000bb]int n[/color][color=#007700], [/color][color=#0000bb]string search[/color][color=#007700]){ for([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]<[/color][color=#0000bb]n[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]++){if([/color][color=#0000bb]listtudien[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]gettu[/color][color=#007700]().[/color][color=#0000bb]equalsignorecase[/color][color=#007700]([/color][color=#0000bb]search[/color][color=#007700])){[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"
  "[/color][color=#007700]+[/color][color=#0000bb]listtudien[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]gettu[/color][color=#007700]()+[/color][color=#dd0000]" : "[/color][color=#007700]+[/color][color=#0000bb]listtudien[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]getnghia[/color][color=#007700]());}}} public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {[/color][color=#0000bb]buoi34_arraylist test [/color][color=#007700]= new [/color][color=#0000bb]buoi34_arraylist[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"bắt đầu taọ từ điển với số từ n = "[/color][color=#007700]);[/color][color=#0000bb]int n [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" --> bắt đầu tạo từ mới: "[/color][color=#007700]);[/color][color=#0000bb]test[/color][color=#007700].[/color][color=#0000bb]taotudien[/color][color=#007700]([/color][color=#0000bb]n[/color][color=#007700]);  [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"
 nhap tu can tra:"[/color][color=#007700]);[/color][color=#0000bb]string st [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700](); [/color][color=#0000bb]test[/color][color=#007700].[/color][color=#0000bb]tratudien[/color][color=#007700]([/color][color=#0000bb]n[/color][color=#007700], [/color][color=#0000bb]st[/color][color=#007700]);}}[/color] 

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[color=#000000]
[/color][color=#ff8000]/* * to change this license header, choose license headers in project properties. * to change this template file, choose tools | templates * and open the template in the editor. */[/color][color=#0000bb]package android[/color][color=#007700].[/color][color=#0000bb]vn[/color][color=#007700];    [/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]arraylist[/color][color=#007700];[/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]scanner[/color][color=#007700];    [/color][color=#ff8000]/** * * @author xtruo_000 */[/color][color=#007700]public class [/color][color=#0000bb]bai34 [/color][color=#007700]{        [/color][color=#ff8000]/*     tạo 1 chương trình từ điển anh - việt nhỏ gồm 1 mảng các từ.      mỗi từ có 2 thuộc tính là "từ" và "nghĩa". số từ của từ điển nhập      vào từ bàn phím, nhập các thông tin của từng từ vào.     thêm tính năng tra từ ở phía cuối chương trình, yêu cầu người dùng nhập      từ cần tra nghĩa rồi tìm kiếm, in ra màn hình nghĩa của từ vừa yêu cầu tìm!     */    [/color][color=#007700]public static [/color][color=#0000bb]void main[/color][color=#007700]([/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]args[/color][color=#007700]) {            [/color][color=#0000bb]arraylist[/color][color=#007700]<[/color][color=#0000bb]tutiengviet[/color][color=#007700]> [/color][color=#0000bb]tudien [/color][color=#007700]= new [/color][color=#0000bb]arraylist[/color][color=#007700]();        [/color][color=#0000bb]scanner input [/color][color=#007700]= new [/color][color=#0000bb]scanner[/color][color=#007700]([/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]in[/color][color=#007700]);            [/color][color=#0000bb]int n[/color][color=#007700];        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập số từ của từ điển: n = "[/color][color=#007700]);        [/color][color=#0000bb]n [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();            for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]n[/color][color=#007700]; [/color][color=#0000bb]i[/color][color=#007700]++) {            [/color][color=#ff8000]// tạo ra đối tượng ttv để lưu dữ liệu            [/color][color=#0000bb]tutiengviet ttv [/color][color=#007700]= new [/color][color=#0000bb]tutiengviet[/color][color=#007700]();            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"từ thứ " [/color][color=#007700]+ ([/color][color=#0000bb]i [/color][color=#007700]+ [/color][color=#0000bb]1[/color][color=#007700]) + [/color][color=#dd0000]": "[/color][color=#007700]);            [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();[/color][color=#ff8000]// dòng này tránh bị trượt dòng, cho vào cho chắc                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập từ: "[/color][color=#007700]);            [/color][color=#0000bb]string w[/color][color=#007700];            [/color][color=#0000bb]w [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();            [/color][color=#0000bb]ttv[/color][color=#007700].[/color][color=#0000bb]setword[/color][color=#007700]([/color][color=#0000bb]w[/color][color=#007700]);[/color][color=#ff8000]// khởi tạo giá trị cho thuộc tính word                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập nghĩa: "[/color][color=#007700]);            [/color][color=#0000bb]string m[/color][color=#007700];            [/color][color=#0000bb]m [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();            [/color][color=#0000bb]ttv[/color][color=#007700].[/color][color=#0000bb]setmeaning[/color][color=#007700]([/color][color=#0000bb]m[/color][color=#007700]);[/color][color=#ff8000]// khởi tạo giá trị cho thuộc tính meaning                [/color][color=#0000bb]tudien[/color][color=#007700].[/color][color=#0000bb]add[/color][color=#007700]([/color][color=#0000bb]ttv[/color][color=#007700]); [/color][color=#ff8000]// thêm đối tượng ttv vào arraylist tudien        [/color][color=#007700]}            [/color][color=#ff8000]// tìm kiếm từ        [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập từ bạn muốn tra nghĩa: "[/color][color=#007700]);        [/color][color=#0000bb]string t [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();        [/color][color=#0000bb]boolean check [/color][color=#007700]= [/color][color=#0000bb]false[/color][color=#007700];            for ([/color][color=#0000bb]int i [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700]; [/color][color=#0000bb]i [/color][color=#007700]< [/color][color=#0000bb]n[/color][color=#007700]; [/color][color=#0000bb]i[/color][color=#007700]++) {                if ([/color][color=#0000bb]t[/color][color=#007700].[/color][color=#0000bb]compareto[/color][color=#007700]([/color][color=#0000bb]tudien[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]getword[/color][color=#007700]()) == [/color][color=#0000bb]0[/color][color=#007700]) {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nghĩa của từ " [/color][color=#007700]+ [/color][color=#0000bb]tudien[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]getword[/color][color=#007700]() + [/color][color=#dd0000]"la: "                        [/color][color=#007700]+ [/color][color=#0000bb]tudien[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]getmeaning[/color][color=#007700]());                [/color][color=#0000bb]check [/color][color=#007700]= [/color][color=#0000bb]true[/color][color=#007700];            }        }          if ([/color][color=#0000bb]check [/color][color=#007700]== [/color][color=#0000bb]false[/color][color=#007700]) {            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"không có từ cần tìm"[/color][color=#007700]);        }    }}    class [/color][color=#0000bb]tutiengviet [/color][color=#007700]{     private [/color][color=#0000bb]string word[/color][color=#007700];    private [/color][color=#0000bb]string meaning[/color][color=#007700];     public [/color][color=#0000bb]string getword[/color][color=#007700]() {        return [/color][color=#0000bb]word[/color][color=#007700];    }     public [/color][color=#0000bb]void setword[/color][color=#007700]([/color][color=#0000bb]string word[/color][color=#007700]) {        [/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]word [/color][color=#007700]= [/color][color=#0000bb]word[/color][color=#007700];    }        public [/color][color=#0000bb]string getmeaning[/color][color=#007700]() {        return [/color][color=#0000bb]meaning[/color][color=#007700];    }      public [/color][color=#0000bb]void setmeaning[/color][color=#007700]([/color][color=#0000bb]string meaning[/color][color=#007700]) {        [/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]meaning [/color][color=#007700]= [/color][color=#0000bb]meaning[/color][color=#007700];    }  }[/color] 

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