Source of MessageTester.java

Structures and functions

public class MessageTester

  1: import javax.swing.*;

  3: public class MessageTester
  4: {
  5:    public static void main(String[] args)
  6:    {
  7:       JOptionPane.showMessageDialog(null, "Hello, World!");
  8:       System.exit(0);
  9:    }
 10: }