程序代码：

import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;

public class FrameT extends JFrame{
    private JButton button;
    
    public FrameT(){
        super("");
        button = new JButton("按钮");
        Container container = getContentPane();
        container.setLayout(new FlowLayout());
        container.add(button);
        button.addActionListener(
                new ActionListener(){
                    public void actionPerformed(ActionEvent event){
                        dispose();
                        JFrame frame = new JFrame();
                        frame.setSize(400,400);
                        frame.getContentPane().setBackground(Color.RED);
                        frame.setVisible(true);
                    }
                }
                );
        
        setSize(200,200);
        setVisible(true);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
    public static void main(String[] args) {
        new FrameT();
    }
}