Bài 34: ArrayList trong Java (1)

**hunghuland** · 10-09-2013, 07:00 AM

<div class="advbbcodebar_fieldset" style="width:90%;"><fieldset><legend>fieldset</legend>/**
*
*/
package example;

import java.util.arraylist;
import java.util.scanner;

/**
* @author chienbk
*
*/
public class engviet {

/**
* @param args
*/
// declare variable
arraylist<dictionary> addarr = new arraylist<>();
dictionary dc = new dictionary();
scanner sc = new scanner(system.in);

// creat a method add word
public void addword() {
string eng;
string vn;
system.out.print("input your english: ");
eng = sc.nextline();
system.out.print("input your vietnamese: ");
vn = sc.nextline();
dc.setenglish(eng);
dc.setvietnam(vn);
addarr.add(dc);
}

// creat a method search word
public void searchword() {
string search;
system.out.print("input your word you want to search: ");
search = sc.nextline();
for (int i = 0; i < addarr.size(); i++) {
if (search.equals( addarr.get(i).getenglish())) {
system.out.println("vietnamese: " + addarr.get(i).getvietnam());

} else {
system.out.println("not word!!!");

}
}

}

public static void main(string[] args) {
// todo auto-generated method stub
scanner sd = new scanner(system.in);
engviet ev=new engviet();
int choice = 0;
system.out.println("english - vietnamese");
do {

system.out.println("1. input your word");
system.out.println("2. seach for word");
system.out.println("3. exit!");
system.out.print("please input your choice: ");
choice = sd.nextint();

switch (choice) {
case 1:
//engviet ev = new engviet();
ev.addword();
break;
case 2:
//engviet em = new engviet();
ev.searchword();
break;
case 3:
break;

default:
system.out.println("not correct! please try again!");
break;
}

} while (choice != 3);

}

}

class dictionary {
private string vietnam;
private string english;

public string getvietnam() {
return vietnam;
}

public void setvietnam(string vietnam) {
this.vietnam = vietnam;
}

public string getenglish() {
return english;
}

public void setenglish(string english) {
this.english = english;
}

}
</fieldset></div>

**daupphun** · 10-10-2013, 07:00 AM

package arraylist_dictionary;

/**
*
* @author admin
*/
public class nhaptu {
private string tu;
private string nghia;

public string getnghia() {
return nghia;
}

public void setnghia(string nghia) {
this.nghia = nghia;
}

public string gettu() {
return tu;
}

public void settu(string tu) {
this.tu = tu;
}

}
package arraylist_dictionary;

import java.util.scanner;
import java.util.arraylist;

/**
*
* @author admin
*/
public class dictionnary {
public static void main(string[] args) {
scanner nhap=new scanner(system.in);
arraylist<nhaptu> list= new arraylist<nhaptu>();
system.out.println("********menu*******");
system.out.println("1.nhap tu:");
system.out.println("2.hien thi:");
system.out.println("3.tim kiem:");
int chon=nhap.nextint();
do {
nhaptu nhaptu=new nhaptu();
switch (chon) {
case 1:
{
string tu, nghia;
system.out.println("moi ban nhap vao tu: ");
tu=nhap.nextline();
nhaptu.settu(tu);
system.out.println("moi ban nhap vao nghia: ");
nghia=nhap.nextline();

nhaptu.setnghia(nghia);
list.add(nhaptu);
}
break;
case 2:
for (int i = 0; i < list.size(); i++) {
system.out.println("-"+list.get(i).gettu()+"-"+list.get(i).getnghia());
}
default:
system.out.println("moi ban nhap lai.");
}

} while (chon!=3);

}
}

**kytrung91** · 10-10-2013, 07:00 AM

Gửi bởi manhdinh

package arraylist_dictionary;

/**
*
* @author admin
*/
public class nhaptu {
private string tu;
private string nghia;

public string getnghia() {
return nghia;
}

public void setnghia(string nghia) {
this.nghia = nghia;
}

public string gettu() {
return tu;
}

public void settu(string tu) {
this.tu = tu;
}

}
package arraylist_dictionary;

import java.util.scanner;
import java.util.arraylist;

/**
*
* @author admin
*/
public class dictionnary {
public static void main(string[] args) {
scanner nhap=new scanner(system.in);
arraylist<nhaptu> list= new arraylist<nhaptu>();
system.out.println("********menu*******");
system.out.println("1.nhap tu:");
system.out.println("2.hien thi:");
system.out.println("3.tim kiem:");
int chon=nhap.nextint();
do {
nhaptu nhaptu=new nhaptu();
switch (chon) {
case 1:
{
string tu, nghia;
system.out.println("moi ban nhap vao tu: ");
tu=nhap.nextline();
nhaptu.settu(tu);
system.out.println("moi ban nhap vao nghia: ");
nghia=nhap.nextline();

nhaptu.setnghia(nghia);
list.add(nhaptu);
}
break;
case 2:
for (int i = 0; i < list.size(); i++) {
system.out.println("-"+list.get(i).gettu()+"-"+list.get(i).getnghia());
}
default:
system.out.println("moi ban nhap lai.");
}

} while (chon!=3);

}
}

//tiasangmoi92 xem giúp mình cái nhé

**yh.gt** · 10-17-2013, 07:00 AM

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[color=#000000]
package bai29[/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]{    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 set[/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]bai29 [/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]tudien [/color][color=#007700]= new [/color][color=#0000bb]arraylist[/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]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"nhập số từ có trong từ điển: "[/color][color=#007700]);        [/color][color=#0000bb]int n [/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]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=#dd0000]"từ thứ "[/color][color=#007700]+([/color][color=#0000bb]i[/color][color=#007700]+[/color][color=#0000bb]1[/color][color=#007700])+[/color][color=#dd0000]" là: "[/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]string tux [/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]"nghĩa: "[/color][color=#007700]);            [/color][color=#0000bb]string nghiax [/color][color=#007700]= [/color][color=#0000bb]in[/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]set[/color][color=#007700]([/color][color=#0000bb]nghiax[/color][color=#007700]);            [/color][color=#0000bb]tudien[/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]"thông tin các từ vừa nhập: "[/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]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]" là: "[/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]tudien[/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]tudien[/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]"từ cần tìm kiếm: "[/color][color=#007700]);        [/color][color=#0000bb]string t [/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]n[/color][color=#007700]; [/color][color=#0000bb]i[/color][color=#007700]++) {            if([/color][color=#0000bb]t[/color][color=#007700].[/color][color=#0000bb]equals[/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]gettu[/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 là: "[/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]getnghia[/color][color=#007700]());            }else{                [/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 không có trong từ điển!!!"[/color][color=#007700]);            }        }    }}[/color]

</blockquote></div>
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**hoangdvh** · 11-10-2013, 07:00 AM

mình đã phải đăng kí thành viên để nói lời cảm ơn bạn. :d
bài viết rất hay và cụ thể . cảm ơn bạn nhiều nhé

**diemasp2** · 11-14-2013, 07:00 AM

đây là bài của mình, mình chưa biết nhiều nên chỉ làm đơn giản thôi: :d

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Mã nguồn PHP:


[color=#000000]
package com[/color][color=#007700].[/color][color=#0000bb]hanhnv[/color][color=#007700].[/color][color=#0000bb]bai34[/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]homeworkunit34 [/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]dictionary[/color][color=#007700]> [/color][color=#0000bb]listword [/color][color=#007700]= new [/color][color=#0000bb]arraylist[/color][color=#007700]();        [/color][color=#0000bb]scanner s [/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].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"enter number of word do you want to input: "[/color][color=#007700]);        [/color][color=#0000bb]int n [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        [/color][color=#0000bb]s[/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]dictionary dic [/color][color=#007700]= new [/color][color=#0000bb]dictionary[/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]"enter word number " [/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]string w [/color][color=#007700]= [/color][color=#0000bb]s[/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]"enter mean of word number " [/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]string m [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();             [/color][color=#0000bb]dic[/color][color=#007700].[/color][color=#0000bb]setword[/color][color=#007700]([/color][color=#0000bb]w[/color][color=#007700]);            [/color][color=#0000bb]dic[/color][color=#007700].[/color][color=#0000bb]setmean[/color][color=#007700]([/color][color=#0000bb]m[/color][color=#007700]);             [/color][color=#0000bb]listword[/color][color=#007700].[/color][color=#0000bb]add[/color][color=#007700]([/color][color=#0000bb]dic[/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]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"enter the word you want to look up: "[/color][color=#007700]);        [/color][color=#0000bb]string lu [/color][color=#007700]= [/color][color=#0000bb]s[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();         [/color][color=#0000bb]boolean found [/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]lu[/color][color=#007700].[/color][color=#0000bb]comparetoignorecase[/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]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=#0000bb]listword[/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]": "                        [/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]getmean[/color][color=#007700]());                [/color][color=#0000bb]found [/color][color=#007700]= [/color][color=#0000bb]true[/color][color=#007700];            }        }        if (![/color][color=#0000bb]found[/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]"word not found!"[/color][color=#007700]);        }    }} class [/color][color=#0000bb]dictionary [/color][color=#007700]{    private [/color][color=#0000bb]string word[/color][color=#007700];    private [/color][color=#0000bb]string mean[/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 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];    }}[/color]

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**vegas123** · 02-10-2014, 07:00 AM

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Mã nguồn PHP:


[color=#000000]
[/color][color=#007700]class [/color][color=#0000bb]tuvung [/color][color=#007700]{    private [/color][color=#0000bb]string tuvung[/color][color=#007700];    private [/color][color=#0000bb]string nghia[/color][color=#007700];     public [/color][color=#0000bb]string gettuvung[/color][color=#007700]() {        return [/color][color=#0000bb]tuvung[/color][color=#007700];    }     public [/color][color=#0000bb]void settuvung[/color][color=#007700]([/color][color=#0000bb]string tuvung[/color][color=#007700]) {        [/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]tuvung [/color][color=#007700]= [/color][color=#0000bb]tuvung[/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]arraylist[/color][color=#007700]<[/color][color=#0000bb]tuvung[/color][color=#007700]> [/color][color=#0000bb]listtd [/color][color=#007700]= new [/color][color=#0000bb]arraylist[/color][color=#007700]<>();      [/color][color=#0000bb]int n[/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]"nhap so tu vung de xay dung tu dien: "[/color][color=#007700]);      [/color][color=#0000bb]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]tuvung tv [/color][color=#007700]= new [/color][color=#0000bb]tuvung[/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 thu " [/color][color=#007700]+ ([/color][color=#0000bb]i[/color][color=#007700]+[/color][color=#0000bb]1[/color][color=#007700]));          [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"tieng anh: "[/color][color=#007700]);          [/color][color=#0000bb]string ta [/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: " [/color][color=#007700]);          [/color][color=#0000bb]string nghia [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();          [/color][color=#0000bb]tv[/color][color=#007700].[/color][color=#0000bb]settuvung[/color][color=#007700]([/color][color=#0000bb]ta[/color][color=#007700]);          [/color][color=#0000bb]tv[/color][color=#007700].[/color][color=#0000bb]setnghia[/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]tv[/color][color=#007700]);      }      [/color][color=#0000bb]string tucantra[/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]tucantra [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();      [/color][color=#0000bb]boolean timthay [/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]listtd[/color][color=#007700].[/color][color=#0000bb]size[/color][color=#007700](); [/color][color=#0000bb]i[/color][color=#007700]++) {          if ( [/color][color=#0000bb]listtd[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]i[/color][color=#007700]).[/color][color=#0000bb]gettuvung[/color][color=#007700]().[/color][color=#0000bb]equalsignorecase[/color][color=#007700]([/color][color=#0000bb]tucantra[/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]"tim thay tu can tra"[/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]gettuvung[/color][color=#007700]() + [/color][color=#dd0000]": " [/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=#0000bb]timthay [/color][color=#007700]= [/color][color=#0000bb]true[/color][color=#007700];              break;          }      }      if ( ![/color][color=#0000bb]timthay[/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]"khong tim thay tu can tra"[/color][color=#007700]);  }}[/color]

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

**diennguyen1** · 03-06-2014, 07:00 AM

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<div class="bbcm_spoiler_noscript"><blockquote>

Mã nguồn PHP:


[color=#000000]
package nhansu[/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]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 [/color][color=#0000bb]void taotudien[/color][color=#007700](){           }}public class [/color][color=#0000bb]tudienav [/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]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]"+ban muon tao mot cuon tu dien co bao nhieu tu?"[/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]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]();        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]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();            [/color][color=#0000bb]tudien a[/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]"tu thu "[/color][color=#007700]+([/color][color=#0000bb]i[/color][color=#007700]+[/color][color=#0000bb]1[/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]string atu[/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:"[/color][color=#007700]);            [/color][color=#0000bb]string anghia[/color][color=#007700]=[/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();            [/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]settu[/color][color=#007700]([/color][color=#0000bb]atu[/color][color=#007700]);            [/color][color=#0000bb]a[/color][color=#007700].[/color][color=#0000bb]setnghia[/color][color=#007700]([/color][color=#0000bb]anghia[/color][color=#007700]);            [/color][color=#0000bb]listtd[/color][color=#007700].[/color][color=#0000bb]add[/color][color=#007700]([/color][color=#0000bb]a[/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]();        for([/color][color=#0000bb]int j[/color][color=#007700]=[/color][color=#0000bb]0[/color][color=#007700];[/color][color=#0000bb]j[/color][color=#007700]<[/color][color=#0000bb]listtd[/color][color=#007700].[/color][color=#0000bb]size[/color][color=#007700]();[/color][color=#0000bb]j[/color][color=#007700]++){            if(([/color][color=#0000bb]listtd[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]j[/color][color=#007700]).[/color][color=#0000bb]gettu[/color][color=#007700]()).[/color][color=#0000bb]equals[/color][color=#007700]([/color][color=#0000bb]st[/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]listtd[/color][color=#007700].[/color][color=#0000bb]get[/color][color=#007700]([/color][color=#0000bb]j[/color][color=#007700]).[/color][color=#0000bb]getnghia[/color][color=#007700]());            }        }    }}[/color]

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

**sacumranmi** · 03-26-2014, 07:00 AM

em muốn hỏi... em muốn nhập tên học sinh theo kiểu(integer.parseint(joptionpane.showinputdialo g(null, "nhap n"))-->kiểu này chỉ nhập được tuổi))
em phải làm sao

**mrsiegs2014** · 04-08-2014, 07:00 AM

package moreunit;

import java.util.arraylist;
import java.util.inputmismatchexception;
import java.util.scanner;

/**
*
* @author thangpc
*/
class main {

private string tu;
private string nghia;

public string gettu() {
return tu;
}

public void settu(string tu) {
this.tu = tu;
}

public string getnghia() {
return nghia;
}

public void setnghia(string nghia) {
this.nghia = nghia;
}
}

public class vidu {

public static void main(string[] args) {
arraylist<main> list = new arraylist();
scanner sc = new scanner(system.in);
int n = 0;
string s1,s2,s3,s4;
int a = 0;
do {
system.out.println("
\t\t***menu****");
system.out.println("1:tao tu dien");
system.out.println("2:tra nghia");
system.out.println("3:them tu");
system.out.println("4:thoat");
try{
system.out.print("\tchon thao tac: ");
a = sc.nextint();
sc.nextline();}catch(inputmismatchexception e){
system.out.println("error: "+e);
}
switch (a) {

case 1: {
try {
system.out.print("** so tu nhap vao: ");
n = sc.nextint();
sc.nextline();
} catch (inputmismatchexception e) {
system.out.println("error: ");
}
for (int i = 0; i < n; i++) {
main x = new main();
system.out.print("- tu " + (i + 1) + ": ");
string tux = sc.nextline();
system.out.print("+ nghia: ");
string nghiax = sc.nextline();

x.settu(tux);
x.setnghia(nghiax);
list.add(x);
}
break;
}

case 2: {
system.out.print("** nhap tu can tra: ");
s2 = sc.nextline();
for(int j=0;j<n;j++){
if(s2.equals(list.get(j).gettu())){
system.out.println("+"+list.get(j).getnghia());
}
}
break;
}
case 4:{
break;
}
case 3:{
system.out.print("-them tu: ");
s3 = sc.nextline();
system.out.print("+nghia: ");
s4 = sc.nextline();
main y = new main();
y.setnghia(s4);
y.settu(s3);
list.add(1, y);
}
}

} while (a != 4);
}
}
đây là bài của mình mong mọi người giúp đỡ? đóng góp ý kiến giúp mình.

Chủ đề: Bài 34: ArrayList trong Java (1)

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