Bài 9: Mảng trong Java!

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bác nào dảnh xem giúp e nhé!!!
bài 1<div class="bbcodeblock bbcodequote bbcmspoilerblock">
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[/color][color=#ff8000]/** to change this template, choose tools | templates* and open the template in the editor.*/[/color][color=#0000bb]package arrdemo[/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]//số sinh viên nhập từ bàn phím. khai báo 1 mảng gồm danh sách họ tên sinh viên.//tên từng sinh viên nhập từ bàn phím. //sau khi nhập xong, chương trình hỏi nhập tên sinh viên muốn tìm kiếm.//tìm và in ra kết quả là có trong danh sách hay không.[/color][color=#007700]public class [/color][color=#0000bb]bai1 [/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 i[/color][color=#007700];            [/color][color=#0000bb]boolean kq[/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]"nhâp số sinh viên : "[/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]();            [/color][color=#0000bb]string  a [/color][color=#007700][] = new [/color][color=#0000bb]string [/color][color=#007700][[/color][color=#0000bb]n[/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]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]"nhập sinh viên thứ  : "[/color][color=#007700]+[/color][color=#0000bb]i[/color][color=#007700]);            [/color][color=#0000bb]a[/color][color=#007700][[/color][color=#0000bb]i[/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]"nhập tên sinh viên muốn tìm : "[/color][color=#007700]);            [/color][color=#0000bb]string b [/color][color=#007700]= [/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextline[/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]n[/color][color=#007700];[/color][color=#0000bb]i[/color][color=#007700]++) {          if([/color][color=#0000bb]b[/color][color=#007700].[/color][color=#0000bb]equals[/color][color=#007700]([/color][color=#0000bb]a[/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]"có trong danh sách"[/color][color=#007700]);              [/color][color=#0000bb]kq[/color][color=#007700]=[/color][color=#0000bb]false[/color][color=#007700];          }        }if([/color][color=#0000bb]kq[/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]"khong có trong danh sách"[/color][color=#007700]);           }    } [/color] 

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bài 2<div class="bbcodeblock bbcodequote bbcmspoilerblock">
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[color=#000000]
[/color][color=#ff8000]/** to change this template, choose tools | templates* and open the template in the editor.*/[/color][color=#0000bb]package arrdemo[/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]//sắp xếp 1 dãy n số nguyên nhập vào từ bàn phím theo thứ tự tăng dần![/color][color=#007700]public class [/color][color=#0000bb]bai2 [/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 tmp[/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]"số phần tử của dãy : "[/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]int [/color][color=#007700][][/color][color=#0000bb]a [/color][color=#007700]= new [/color][color=#0000bb]int [/color][color=#007700][[/color][color=#0000bb]n[/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]"nhập phần từ thứ "[/color][color=#007700]+[/color][color=#0000bb]i[/color][color=#007700]);            [/color][color=#0000bb]a[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]]=[/color][color=#0000bb]in[/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]++){            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]i[/color][color=#007700];[/color][color=#0000bb]j[/color][color=#007700]++){              if([/color][color=#0000bb]a[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]]<[/color][color=#0000bb]a[/color][color=#007700][[/color][color=#0000bb]j[/color][color=#007700]]){                [/color][color=#0000bb]tmp [/color][color=#007700]= [/color][color=#0000bb]a[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]];                [/color][color=#0000bb]a[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]]=[/color][color=#0000bb]a[/color][color=#007700][[/color][color=#0000bb]j[/color][color=#007700]];                [/color][color=#0000bb]a[/color][color=#007700][[/color][color=#0000bb]j[/color][color=#007700]]=[/color][color=#0000bb]tmp[/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]" " [/color][color=#007700]+ [/color][color=#0000bb]a[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]]);        }                       }}[/color] 

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bài 3 <div class="bbcodeblock bbcodequote bbcmspoilerblock">
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[color=#000000]
[/color][color=#ff8000]/** to change this template, choose tools | templates* and open the template in the editor.*/  [/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 mrkhoai*/[/color][color=#007700]public class [/color][color=#0000bb]bai3 [/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]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]([/color][color=#dd0000]" nhập số hàng : "[/color][color=#007700]);        [/color][color=#0000bb]int h[/color][color=#007700]=[/color][color=#0000bb]in[/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]"nhập số cột : "[/color][color=#007700]);        [/color][color=#0000bb]int c[/color][color=#007700]=[/color][color=#0000bb]in[/color][color=#007700].[/color][color=#0000bb]nextint[/color][color=#007700]();        [/color][color=#0000bb]int a1[/color][color=#007700][][]= new [/color][color=#0000bb]int[/color][color=#007700][[/color][color=#0000bb]h[/color][color=#007700]][[/color][color=#0000bb]c[/color][color=#007700]];        [/color][color=#0000bb]int a2[/color][color=#007700][][]= new [/color][color=#0000bb]int [/color][color=#007700][[/color][color=#0000bb]h[/color][color=#007700]][[/color][color=#0000bb]c[/color][color=#007700]];        [/color][color=#0000bb]int a3[/color][color=#007700][][]=new [/color][color=#0000bb]int [/color][color=#007700][[/color][color=#0000bb]h[/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=#dd0000]"nhập ma trận a1"[/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]h[/color][color=#007700];[/color][color=#0000bb]i[/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]c[/color][color=#007700];[/color][color=#0000bb]j[/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 a1["[/color][color=#007700]+[/color][color=#0000bb]i[/color][color=#007700]+[/color][color=#dd0000]"]"[/color][color=#007700]+[/color][color=#dd0000]"["[/color][color=#007700]+[/color][color=#0000bb]j[/color][color=#007700]+[/color][color=#dd0000]"]"[/color][color=#007700]);               [/color][color=#0000bb]a1[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/color][color=#007700]]=[/color][color=#0000bb]in[/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]"nhập ma trận a2"[/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]h[/color][color=#007700];[/color][color=#0000bb]i[/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]c[/color][color=#007700];[/color][color=#0000bb]j[/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 a1["[/color][color=#007700]+[/color][color=#0000bb]i[/color][color=#007700]+[/color][color=#dd0000]"]"[/color][color=#007700]+[/color][color=#dd0000]"["[/color][color=#007700]+[/color][color=#0000bb]j[/color][color=#007700]+[/color][color=#dd0000]"]"[/color][color=#007700]);              [/color][color=#0000bb]a2[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/color][color=#007700]]=[/color][color=#0000bb]in[/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]"ma trận a1 là : "[/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]h[/color][color=#007700];[/color][color=#0000bb]i[/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]c[/color][color=#007700];[/color][color=#0000bb]j[/color][color=#007700]++){                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]"  "[/color][color=#007700]+[/color][color=#0000bb]a1[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/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]"ma trận a2 là : "[/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]h[/color][color=#007700];[/color][color=#0000bb]i[/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]c[/color][color=#007700];[/color][color=#0000bb]j[/color][color=#007700]++){                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]" "[/color][color=#007700]+[/color][color=#0000bb]a2[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/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]"tổng 2 ma trận là :"[/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]h[/color][color=#007700];[/color][color=#0000bb]i[/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]c[/color][color=#007700];[/color][color=#0000bb]j[/color][color=#007700]++){                [/color][color=#0000bb]a3[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/color][color=#007700]]=[/color][color=#0000bb]a1[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/color][color=#007700]]+[/color][color=#0000bb]a2[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/color][color=#007700]];                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print([/color][color=#dd0000]" "[/color][color=#007700]+[/color][color=#0000bb]a3[/color][color=#007700][[/color][color=#0000bb]i[/color][color=#007700]][[/color][color=#0000bb]j[/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] 

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[inthelong4]

bài 1:
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package basic[/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=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]inputmismatchexception[/color][color=#007700]; public class [/color][color=#0000bb]arrayofstudents [/color][color=#007700]{ private [/color][color=#0000bb]int numberofstudents[/color][color=#007700];private [/color][color=#0000bb]string[/color][color=#007700][] [/color][color=#0000bb]name[/color][color=#007700];private 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]); public [/color][color=#0000bb]arrayofstudents[/color][color=#007700](){[/color][color=#0000bb]boolean continueloop [/color][color=#007700]= [/color][color=#0000bb]true[/color][color=#007700];[/color][color=#0000bb]int temp [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700];[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print( [/color][color=#dd0000]"enter number of students: " [/color][color=#007700]); while ( [/color][color=#0000bb]continueloop [/color][color=#007700]){try{[/color][color=#0000bb]temp [/color][color=#007700]= [/color][color=#0000bb]integer[/color][color=#007700].[/color][color=#0000bb]parseint[/color][color=#007700]( [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]() );if ( [/color][color=#0000bb]temp [/color][color=#007700]< [/color][color=#0000bb]0 [/color][color=#007700])throw new [/color][color=#0000bb]illegalargumentexception[/color][color=#007700]();else[/color][color=#0000bb]continueloop [/color][color=#007700]= [/color][color=#0000bb]false[/color][color=#007700];}catch( [/color][color=#0000bb]inputmismatchexception [/color][color=#007700]| [/color][color=#0000bb]illegalargumentexception e [/color][color=#007700]){[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print( [/color][color=#dd0000]"please enter again!" [/color][color=#007700]);}} [/color][color=#0000bb]numberofstudents [/color][color=#007700]= [/color][color=#0000bb]temp[/color][color=#007700];[/color][color=#0000bb]name [/color][color=#007700]= new [/color][color=#0000bb]string[/color][color=#007700][ [/color][color=#0000bb]numberofstudents [/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 name of each student"[/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]numberofstudents[/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]printf[/color][color=#007700]( [/color][color=#dd0000]"%s %d\t"[/color][color=#007700], [/color][color=#dd0000]"student "[/color][color=#007700], [/color][color=#0000bb]i [/color][color=#007700]+ [/color][color=#0000bb]1 [/color][color=#007700]);[/color][color=#0000bb]name[/color][color=#007700][ [/color][color=#0000bb]i [/color][color=#007700]] = [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();}} public [/color][color=#0000bb]void run[/color][color=#007700](){[/color][color=#0000bb]string str [/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]"find a student with his name"[/color][color=#007700]);while( [/color][color=#0000bb]true [/color][color=#007700]){while( [/color][color=#0000bb]str [/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]"please enter a name: " [/color][color=#007700]);[/color][color=#0000bb]str [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();} [/color][color=#0000bb]int position [/color][color=#007700]= [/color][color=#0000bb]search[/color][color=#007700]( [/color][color=#0000bb]str [/color][color=#007700]);if ( [/color][color=#0000bb]position [/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]"found at position " [/color][color=#007700]+ ( [/color][color=#0000bb]position [/color][color=#007700]+ [/color][color=#0000bb]1 [/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]"not found!" [/color][color=#007700]); [/color][color=#ff8000]//ask user to continue or not?[/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print( [/color][color=#dd0000]"do yout want to find an other student?  enter y for new search" [/color][color=#007700]+[/color][color=#dd0000]" or an other button for ending"[/color][color=#007700]);[/color][color=#0000bb]string temp [/color][color=#007700]= [/color][color=#0000bb]input[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]();if ( [/color][color=#0000bb]temp[/color][color=#007700].[/color][color=#0000bb]charat[/color][color=#007700]( [/color][color=#0000bb]0 [/color][color=#007700]) != [/color][color=#dd0000]'y' [/color][color=#007700])[/color][color=#0000bb]system[/color][color=#007700].exit( [/color][color=#0000bb]0 [/color][color=#007700]);else[/color][color=#0000bb]str [/color][color=#007700]= [/color][color=#dd0000]""[/color][color=#007700];}} private [/color][color=#0000bb]int search[/color][color=#007700]( [/color][color=#0000bb]string str [/color][color=#007700]){[/color][color=#0000bb]int counter [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700];while ( [/color][color=#0000bb]counter [/color][color=#007700]< [/color][color=#0000bb]numberofstudents [/color][color=#007700]){if ( [/color][color=#0000bb]str[/color][color=#007700].[/color][color=#0000bb]equalsignorecase[/color][color=#007700]( [/color][color=#0000bb]name[/color][color=#007700][ [/color][color=#0000bb]counter [/color][color=#007700]] ) )return [/color][color=#0000bb]counter[/color][color=#007700];else[/color][color=#0000bb]counter[/color][color=#007700]++;}return -[/color][color=#0000bb]1[/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]arrayofstudents newtest [/color][color=#007700]= new [/color][color=#0000bb]arrayofstudents[/color][color=#007700]();[/color][color=#0000bb]newtest[/color][color=#007700].[/color][color=#0000bb]run[/color][color=#007700]();} }[/color] 

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bài 2: chưa nhớ lắm các cách sắp xếp khác nên tạm thời để đấy. có gì mình sửa lại sau
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package basic[/color][color=#007700]; [/color][color=#0000bb]import java[/color][color=#007700].[/color][color=#0000bb]util[/color][color=#007700].[/color][color=#0000bb]arrays[/color][color=#007700]; public class [/color][color=#0000bb]sortingarray [/color][color=#007700]{ private static final [/color][color=#0000bb]int[/color][color=#007700][] [/color][color=#0000bb]unsorted [/color][color=#007700]= { [/color][color=#0000bb]6[/color][color=#007700], [/color][color=#0000bb]4[/color][color=#007700], [/color][color=#0000bb]2[/color][color=#007700], [/color][color=#0000bb]1[/color][color=#007700], [/color][color=#0000bb]6[/color][color=#007700], [/color][color=#0000bb]3[/color][color=#007700], [/color][color=#0000bb]12[/color][color=#007700], [/color][color=#0000bb]10[/color][color=#007700], [/color][color=#0000bb]7[/color][color=#007700], [/color][color=#0000bb]9[/color][color=#007700], [/color][color=#0000bb]5[/color][color=#007700], [/color][color=#0000bb]3 [/color][color=#007700]};private [/color][color=#0000bb]int[/color][color=#007700][] [/color][color=#0000bb]sorted[/color][color=#007700];private [/color][color=#0000bb]int length[/color][color=#007700]; [/color][color=#ff8000]// constructor[/color][color=#007700]public [/color][color=#0000bb]sortingarray[/color][color=#007700](){[/color][color=#0000bb]length [/color][color=#007700]= [/color][color=#0000bb]unsorted[/color][color=#007700].[/color][color=#0000bb]length[/color][color=#007700];[/color][color=#0000bb]sorted [/color][color=#007700]= new [/color][color=#0000bb]int[/color][color=#007700][ [/color][color=#0000bb]length [/color][color=#007700]];} [/color][color=#ff8000]// print array after sorting ( mac du ket qua giong nhau =)) )[/color][color=#007700]public [/color][color=#0000bb]void display[/color][color=#007700]( [/color][color=#0000bb]string str [/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]"
array after " [/color][color=#007700]+ [/color][color=#0000bb]str [/color][color=#007700]+ [/color][color=#dd0000]" : " [/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]length[/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]printf[/color][color=#007700]( [/color][color=#dd0000]"%d  "[/color][color=#007700], [/color][color=#0000bb]sorted[/color][color=#007700][ [/color][color=#0000bb]i [/color][color=#007700]] );}} [/color][color=#ff8000]// bubble sorting[/color][color=#007700]public [/color][color=#0000bb]int[/color][color=#007700][] [/color][color=#0000bb]bubblesort[/color][color=#007700](){[/color][color=#0000bb]int[/color][color=#007700][] [/color][color=#0000bb]temp [/color][color=#007700]= [/color][color=#0000bb]arrays[/color][color=#007700].[/color][color=#0000bb]copyof[/color][color=#007700]( [/color][color=#0000bb]unsorted [/color][color=#007700], [/color][color=#0000bb]length [/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]length [/color][color=#007700]- [/color][color=#0000bb]1[/color][color=#007700]; [/color][color=#0000bb]i[/color][color=#007700]++ )for ( [/color][color=#0000bb]int j [/color][color=#007700]= [/color][color=#0000bb]i [/color][color=#007700]+ [/color][color=#0000bb]1[/color][color=#007700]; [/color][color=#0000bb]j [/color][color=#007700]< [/color][color=#0000bb]length[/color][color=#007700]; [/color][color=#0000bb]j[/color][color=#007700]++ ){if ( [/color][color=#0000bb]temp[/color][color=#007700][ [/color][color=#0000bb]i [/color][color=#007700]] > [/color][color=#0000bb]temp[/color][color=#007700][ [/color][color=#0000bb]j [/color][color=#007700]] ){[/color][color=#0000bb]int value [/color][color=#007700]= [/color][color=#0000bb]temp[/color][color=#007700][ [/color][color=#0000bb]i [/color][color=#007700]];[/color][color=#0000bb]temp[/color][color=#007700][ [/color][color=#0000bb]i [/color][color=#007700]] = [/color][color=#0000bb]temp[/color][color=#007700][ [/color][color=#0000bb]j [/color][color=#007700]];[/color][color=#0000bb]temp[/color][color=#007700][ [/color][color=#0000bb]j[/color][color=#007700]] = [/color][color=#0000bb]value[/color][color=#007700];}} return [/color][color=#0000bb]temp[/color][color=#007700];} [/color][color=#ff8000]// insertion sort//public int[] insertionsort()//{ //} [/color][color=#007700]public [/color][color=#0000bb]void run[/color][color=#007700](){[/color][color=#0000bb]sorted [/color][color=#007700]= [/color][color=#0000bb]bubblesort[/color][color=#007700]();[/color][color=#0000bb]display[/color][color=#007700]( [/color][color=#dd0000]"bubble sort" [/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]sortingarray newtest [/color][color=#007700]= new [/color][color=#0000bb]sortingarray[/color][color=#007700]();[/color][color=#0000bb]newtest[/color][color=#007700].[/color][color=#0000bb]run[/color][color=#007700]();} }[/color] 

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bài 3 :d

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package basic[/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]sumofmatrices [/color][color=#007700]{     private static [/color][color=#0000bb]scanner scanner [/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 class [/color][color=#0000bb]matrix    [/color][color=#007700]{        private [/color][color=#0000bb]int[/color][color=#007700][][] [/color][color=#0000bb]matrix[/color][color=#007700];        private [/color][color=#0000bb]int row[/color][color=#007700];        private [/color][color=#0000bb]int column[/color][color=#007700];               [/color][color=#ff8000]// constructor        [/color][color=#007700]public [/color][color=#0000bb]matrix[/color][color=#007700]()        {            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print( [/color][color=#dd0000]"enter number of row and column
" [/color][color=#007700]);            [/color][color=#0000bb]boolean continueloop [/color][color=#007700]= [/color][color=#0000bb]true[/color][color=#007700];            while( [/color][color=#0000bb]continueloop [/color][color=#007700])            {                try                {                    [/color][color=#0000bb]row [/color][color=#007700]= [/color][color=#0000bb]inputhandling[/color][color=#007700]( [/color][color=#dd0000]"row" [/color][color=#007700]);                    [/color][color=#0000bb]column [/color][color=#007700]= [/color][color=#0000bb]inputhandling[/color][color=#007700]( [/color][color=#dd0000]"column" [/color][color=#007700]);                                       if ( [/color][color=#0000bb]row [/color][color=#007700]<= [/color][color=#0000bb]0 [/color][color=#007700]|| [/color][color=#0000bb]column [/color][color=#007700]<= [/color][color=#0000bb]0 [/color][color=#007700])                        throw new [/color][color=#0000bb]illegalargumentexception[/color][color=#007700]( [/color][color=#dd0000]"row or column cannot have negative value" [/color][color=#007700]);                    else                        [/color][color=#0000bb]continueloop [/color][color=#007700]= [/color][color=#0000bb]false[/color][color=#007700];                }                catch ( [/color][color=#0000bb]exception e [/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]e [/color][color=#007700]);                }            }                       [/color][color=#0000bb]matrix [/color][color=#007700]= new [/color][color=#0000bb]int[/color][color=#007700][ [/color][color=#0000bb]row [/color][color=#007700]][ [/color][color=#0000bb]column [/color][color=#007700]];        }               [/color][color=#ff8000]// constructor with argument        [/color][color=#007700]public [/color][color=#0000bb]matrix[/color][color=#007700]( [/color][color=#0000bb]int row[/color][color=#007700], [/color][color=#0000bb]int column [/color][color=#007700])        {            [/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]row [/color][color=#007700]= [/color][color=#0000bb]row[/color][color=#007700];            [/color][color=#0000bb]this[/color][color=#007700].[/color][color=#0000bb]column [/color][color=#007700]= [/color][color=#0000bb]column[/color][color=#007700];            [/color][color=#0000bb]matrix [/color][color=#007700]= new [/color][color=#0000bb]int[/color][color=#007700][ [/color][color=#0000bb]row [/color][color=#007700]][ [/color][color=#0000bb]column [/color][color=#007700]];        }               public [/color][color=#0000bb]int getrow[/color][color=#007700]()        {            return [/color][color=#0000bb]row[/color][color=#007700];        }               public [/color][color=#0000bb]int getcolumn[/color][color=#007700]()        {            return [/color][color=#0000bb]column[/color][color=#007700];        }               [/color][color=#ff8000]// enter value of each elements of matrix        [/color][color=#007700]public [/color][color=#0000bb]void passingvalue[/color][color=#007700]()        {            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print( [/color][color=#dd0000]"enter value for each element of matrix
" [/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]row[/color][color=#007700]; [/color][color=#0000bb]i[/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]column[/color][color=#007700]; [/color][color=#0000bb]j[/color][color=#007700]++ )                {                    [/color][color=#0000bb]matrix[/color][color=#007700][ [/color][color=#0000bb]i [/color][color=#007700]][ [/color][color=#0000bb]j [/color][color=#007700]] = [/color][color=#0000bb]inputhandling[/color][color=#007700]( [/color][color=#dd0000]"[" [/color][color=#007700]+ [/color][color=#0000bb]i [/color][color=#007700]+ [/color][color=#dd0000]"][" [/color][color=#007700]+ [/color][color=#0000bb]j [/color][color=#007700]+ [/color][color=#dd0000]"]" [/color][color=#007700]);                }        }               public [/color][color=#0000bb]void display[/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]row[/color][color=#007700]; [/color][color=#0000bb]i[/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]column[/color][color=#007700]; [/color][color=#0000bb]j[/color][color=#007700]++ )                {                    [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]printf[/color][color=#007700]( [/color][color=#dd0000]"%d "[/color][color=#007700], [/color][color=#0000bb]matrix[/color][color=#007700][ [/color][color=#0000bb]i [/color][color=#007700]][ [/color][color=#0000bb]j [/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]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]();        }    }       [/color][color=#ff8000]// ensure the entered value is a integer    [/color][color=#007700]private static [/color][color=#0000bb]int inputhandling[/color][color=#007700]( [/color][color=#0000bb]string str [/color][color=#007700])    {        [/color][color=#0000bb]boolean continueloop [/color][color=#007700]= [/color][color=#0000bb]true[/color][color=#007700];        [/color][color=#0000bb]int result [/color][color=#007700]= [/color][color=#0000bb]0[/color][color=#007700];        while( [/color][color=#0000bb]continueloop [/color][color=#007700])        {            try            {                [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]out[/color][color=#007700].print( [/color][color=#0000bb]str [/color][color=#007700]+ [/color][color=#dd0000]":\t" [/color][color=#007700]);                [/color][color=#0000bb]result [/color][color=#007700]= [/color][color=#0000bb]integer[/color][color=#007700].[/color][color=#0000bb]parseint[/color][color=#007700]( [/color][color=#0000bb]scanner[/color][color=#007700].[/color][color=#0000bb]nextline[/color][color=#007700]() );                [/color][color=#0000bb]continueloop [/color][color=#007700]= [/color][color=#0000bb]false[/color][color=#007700];            }            catch ( [/color][color=#0000bb]exception e [/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]"value is invalid! please enter again" [/color][color=#007700]);            }        }        return [/color][color=#0000bb]result[/color][color=#007700];    }       [/color][color=#ff8000]// method to plus two matrices    [/color][color=#007700]public static [/color][color=#0000bb]matrix addition[/color][color=#007700]( [/color][color=#0000bb]sumofmatrices temp[/color][color=#007700],  [/color][color=#0000bb]matrix ma1[/color][color=#007700], [/color][color=#0000bb]matrix ma2 [/color][color=#007700]) [/color][color=#0000bb]throws exception    [/color][color=#007700]{        if ( [/color][color=#0000bb]ma1[/color][color=#007700].[/color][color=#0000bb]row [/color][color=#007700]!= [/color][color=#0000bb]ma2[/color][color=#007700].[/color][color=#0000bb]row [/color][color=#007700]|| [/color][color=#0000bb]ma1[/color][color=#007700].[/color][color=#0000bb]column [/color][color=#007700]!= [/color][color=#0000bb]ma2[/color][color=#007700].[/color][color=#0000bb]column [/color][color=#007700])        {            throw new [/color][color=#0000bb]exception[/color][color=#007700]( [/color][color=#dd0000]"rows or column of two matrices aren't equal. operation plus cannot be processed." [/color][color=#007700]);        }        else        {            [/color][color=#0000bb]int numberofrow [/color][color=#007700]= [/color][color=#0000bb]ma1[/color][color=#007700].[/color][color=#0000bb]row[/color][color=#007700], [/color][color=#0000bb]numberofcolumn [/color][color=#007700]= [/color][color=#0000bb]ma1[/color][color=#007700].[/color][color=#0000bb]column[/color][color=#007700];            [/color][color=#0000bb]matrix result [/color][color=#007700]= [/color][color=#0000bb]temp[/color][color=#007700].new [/color][color=#0000bb]matrix[/color][color=#007700]( [/color][color=#0000bb]numberofrow[/color][color=#007700], [/color][color=#0000bb]numberofcolumn [/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]numberofrow[/color][color=#007700]; [/color][color=#0000bb]i[/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]numberofcolumn[/color][color=#007700]; [/color][color=#0000bb]j[/color][color=#007700]++ )                {                    [/color][color=#0000bb]result[/color][color=#007700].[/color][color=#0000bb]matrix[/color][color=#007700][ [/color][color=#0000bb]i [/color][color=#007700]][ [/color][color=#0000bb]j [/color][color=#007700]] = [/color][color=#0000bb]ma1[/color][color=#007700].[/color][color=#0000bb]matrix[/color][color=#007700][ [/color][color=#0000bb]i [/color][color=#007700]][ [/color][color=#0000bb]j [/color][color=#007700]] + [/color][color=#0000bb]ma2[/color][color=#007700].[/color][color=#0000bb]matrix[/color][color=#007700][ [/color][color=#0000bb]i [/color][color=#007700]][ [/color][color=#0000bb]j [/color][color=#007700]];                }            return [/color][color=#0000bb]result[/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]sumofmatrices newtest [/color][color=#007700]= new [/color][color=#0000bb]sumofmatrices[/color][color=#007700]();        [/color][color=#0000bb]matrix ma1 [/color][color=#007700]= [/color][color=#0000bb]newtest[/color][color=#007700].new [/color][color=#0000bb]matrix[/color][color=#007700]();        [/color][color=#0000bb]ma1[/color][color=#007700].[/color][color=#0000bb]passingvalue[/color][color=#007700]();        [/color][color=#0000bb]ma1[/color][color=#007700].[/color][color=#0000bb]display[/color][color=#007700]();               [/color][color=#0000bb]matrix ma2 [/color][color=#007700]= [/color][color=#0000bb]newtest[/color][color=#007700].new [/color][color=#0000bb]matrix[/color][color=#007700]();        [/color][color=#0000bb]ma2[/color][color=#007700].[/color][color=#0000bb]passingvalue[/color][color=#007700]();        [/color][color=#0000bb]ma2[/color][color=#007700].[/color][color=#0000bb]display[/color][color=#007700]();               [/color][color=#0000bb]matrix ma3[/color][color=#007700];        try        {            [/color][color=#0000bb]ma3 [/color][color=#007700]= [/color][color=#0000bb]addition[/color][color=#007700]( [/color][color=#0000bb]newtest[/color][color=#007700], [/color][color=#0000bb]ma1[/color][color=#007700], [/color][color=#0000bb]ma2 [/color][color=#007700]);            [/color][color=#0000bb]ma3[/color][color=#007700].[/color][color=#0000bb]display[/color][color=#007700]();        }        catch ([/color][color=#0000bb]exception e[/color][color=#007700])        {            [/color][color=#0000bb]system[/color][color=#007700].[/color][color=#0000bb]err[/color][color=#007700].[/color][color=#0000bb]println[/color][color=#007700]( [/color][color=#0000bb]e [/color][color=#007700]);        }    } }[/color] 

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

[vuthanhlapdoanhnghiep.mcc]

cho e hỏi chương trình em viết đúng sao ko chạy được (((

[HoDaTha]

các bạn xem hộ với lỗi gì mà ko chạy

[tienthangk43]

các bạn xem hộ với lỗi gì mà ko chạy

bạn thử chọn chuột phải phải file rồi run xem, không tạo riêng 1 project mới xem có thay đổi gì không?

[PROQKJZR2086]

bạn thử chọn chuột phải phải file rồi run xem, không tạo riêng 1 project mới xem có thay đổi gì không?

ko được bạn ơi (((

[chinhhyundai]

hello word có chạy được không bạn :d

[noithatdany]

hello word có chạy được không bạn :d

cũng báo thế là sao bạn :/???

[huyngo1232]

oki mình làm dc rồi , xóa sạch hết các ct đi và làm sạch netbean chạy lại từ đầu là dc .
netbean hay lỗi vặt thật

[marylove]

thanks android.vn