java消息框输出_Java(消息框)

/ An addition program

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

public class yusuan {

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

sum1,sum2,sum3,sum4; // sum of number1 and number2

// read in first number from user as a string

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 );

// add the numbers

sum1 = number1 + number2;

// subtract the numbers

sum2 = number1 - number2;

// multiply the numbers

sum3 = number1 * number2;

// divide the numbers

sum4 = number1 / number2;

// display the results

JOptionPane.showMessageDialog(

null, "The 和 is " + sum1, "Results",

JOptionPane.PLAIN_MESSAGE );

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

}

}