hello3.txt

java的一经典教程

// Prints greeting on the screen on three lines
// in a single dialog box
import javax.swing.JOptionPane;

public class Hello3
{
	public static void main(String[] args)
	{
		JOptionPane.showMessageDialog(null,
			"Hello!\nHow nice to see you!\nHow are you?");

		System.exit(0);
	}
}