Java -- 体验窗口

import java.awt.*;
import javax.swing.*;
public class tuxing {
	public static void main(String[] args) {
		JFrame s = new JFrame("第一个窗口"); 
		JFrame s1 = new JFrame("第二个窗口"); 
		Container con = s.getContentPane();
		con.setBackground(Color.green);
		s.setBounds(60,100, 500, 500);
		s1.setBounds(260,100, 500, 500);
		s.setVisible(true);
		s.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
		s1.setVisible(true);
		s1.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);
	}

}