JAVA作业-1

编写一个程序，用户输入两个数，求出其加减乘除，并用消息框显示计算结果。

import javax.swing.JOptionPane;  // import class JOptionPane

public class Counter {     public static void main( String args[] )   

  {        String firstNumber,   // first string entered by user  

             secondNumber;  // second string entered by user    

    int number1,          // first number to add       

     number2,          // second number to add      

      sum,              // sum of number1 and number2       

     cha,              // cha of number1 and number2       

     ji,               // ji of number1 and number2           

      shang;            // shang of number1 and number2     

     firstNumber =           JOptionPane.showInputDialog( "Enter first integer" );

       // read in second number from user as a string   

     secondNumber =           JOptionPane.showInputDialog( "Enter second integer" );

       // convert numbers from type String to type int    

    number1 = Integer.parseInt( firstNumber );     

   number2 = Integer.parseInt( secondNumber );

       sum   = number1 + number2;     

   cha   = number1 - number2;      

  ji    = number1 * number2;    

    shang = number1 / number2;        // display the results   

     JOptionPane.showMessageDialog(           null," The sum is "+sum +"\n"+                " The cha is "+cha +"\n"+                " The ji  is " + ji +"\n"+                " The shang is "+shang,"Results",           JOptionPane.PLAIN_MESSAGE );            

   System.exit( 0 );   // terminate the program     }

 }

JAVA作业-1

原文：http://www.cnblogs.com/aishangtaxuefeihong/p/4859729.html