[20160704]Addition program that use JOptionPane for input and output

Posted 2020-08-03 娃哈哈哈

 1 //Addition program that use JOptionPane for input and output.
 2 
 3 import javax.swing.JOptionPane;
 4 
 5 public class Addition{
 6    public static void main(String[] args) {
 7      String firstNumber=JOptionPane.showInputDialog("Enter first integer!");
 8 
 9      String secondNumber=JOptionPane.showInputDialog("Enter second integer!");
10 
11      int num1=Integer.parseInt(firstNumber);
12      int num2=Integer.parseInt(secondNumber);
13 
14      int sum=num1+num2;
15 
16      JOptionPane.showMessageDialog(null,"The sum is:\t"+sum,"sum of two integers",JOptionPane.PLAIN_MESSAGE);
17 
18    }
19 }