//加减乘除运算 import javax.swing.JOptionPane; public class Yunsuan { public static void main( String args[] ) { String firstNumber, // 输入第一个数 secondNumber; // 输入第二个数 int number1, number2, sum, cha, ji, shang; firstNumber = JOptionPane.showInputDialog( "Enter first integer" ); secondNumber = JOptionPane.showInputDialog( "Enter second integer" ); number1 = Integer.parseInt( firstNumber ); number2 = Integer.parseInt( secondNumber ); // 加法 sum = number1 + number2; //减法 cha = number1 - number2; //乘法 ji = number1 * number2; //除法 shang = number1 / number2; // 结果显示 JOptionPane.showMessageDialog( null, "和为 " + sum +" "+ "差为:" +cha +" "+ "积为:" + ji + " "+ "商为" +shang +" ", "Results", JOptionPane.PLAIN_MESSAGE ); System.exit( 0 ); // terminate the program } }