菜鸟求助,如何实现将按一个按钮,将一个FRAME中的一个PANEL变成预先编好的另外一个PANEL.以及按了一个按钮以后,弹出一个对话框之类的操作

[tianhongdehao]

a.java
public class a extends javax.swing.JFrame {

public a() {
initComponents();
}

private void initComponents() {
jButton1 = new javax.swing.JButton();
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jButton1.setText("\u5207\u6362\u9875\u9762");
jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jButton1MouseClicked(evt);
}
});

jLabel1.setText("\u9875\u97621");

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(171, 171, 171)
.addComponent(jLabel1)
.addContainerGap(187, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addContainerGap(137, Short.MAX_VALUE)
.addComponent(jLabel1)
.addGap(117, 117, 117))
);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(68, 68, 68)
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 171, Short.MAX_VALUE)
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap(229, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(jButton1)
.addGap(178, 178, 178))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())))
);
pack();
}// </editor-fold>

private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {
javax.swing.JPanel t=new b();
t.setVisible(true);
jPanel1=t;
this.repaint();
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new a().setVisible(true);
}
});
}
private javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JPanel jPanel1;


}

用NETBEANS拖的,实在看不懂NETBEANS的布局管理器是怎么工作的.
另外新建个JAVA文件,是一个JPANEL
public class b extends javax.swing.JPanel {

public b() {
initComponents();
}

private void initComponents() {
jLabel1 = new javax.swing.JLabel();

jLabel1.setText("\u9875\u97622");

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(194, Short.MAX_VALUE)
.addComponent(jLabel1)
.addGap(176, 176, 176))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(134, 134, 134)
.addComponent(jLabel1)
.addContainerGap(151, Short.MAX_VALUE))
);
}

private javax.swing.JLabel jLabel1;


}
很菜的鸟,希望大家帮助下,先谢谢了.希望高手们推荐点学GUI的资料哈

[tianhongdehao]

楼上的大哥能不能说详细点,红色的那个地方是我自己写的监听事件,知道不对,希望指导下

[jaguarlsl]

监听事件,隐藏和显示不同的Canvas就可以了