求救！组件或容器的remove()或removeAll()怎么用

[Yanbin_Q]

谁帮我看看，以下代码怎么才能把面板上的按钮移除掉。

//Test.java

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;


public class Test extends JFrame{
JButton b1;
public Test(){
Container contentPane = getContentPane();
contentPane.setLayout(null);

b1 = new JButton("one");
contentPane.add(b1);
Insets insets = contentPane.getInsets();
b1.setBounds(35 + insets.left, 15 + insets.top, 75, 20);

contentPane.addMouseListener(
new MouseAdapter(){
public void mousePressed(MouseEvent e){
removeAll();
}

}
);

}

public static void main(String[] args){
Test t=new Test();
t.setSize(200,200);
t.setVisible(true);
}
}

[cwell]

repaint一下。
final Container contentPane = getContentPane();
contentPane.addMouseListener(
new MouseAdapter(){
public void mousePressed(MouseEvent e){
contentPane.removeAll();
contentPane.repaint();
}
}
);

[Yanbin_Q]

去掉原来的按钮，怎么才能再加上一个文本框让它显示出来呢？

[cwell]

差不多的。
new MouseAdapter(){
public void mousePressed(MouseEvent e){
contentPane.removeAll();
JButton btnNew = new JButton("new");
btnNew.setBounds(0, 0, 75, 20);
contentPane.repaint();
}
}

[Yanbin_Q]

OK,THANK YOU!