?? listenercreateframe2.java
字號(hào):
package listener;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class ListenerCreateFrame2 extends JFrame {
private static final long serialVersionUID = 1L;
private JPanel jContentPane = null;
private JButton jButton = null;
public ListenerCreateFrame2() {
super();
setDefaultCloseOperation(EXIT_ON_CLOSE);
initialize();
}
public static void main(String[] args) {
ListenerCreateFrame2 frame = new ListenerCreateFrame2();
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = frame.getSize();
frame.setLocation((screenSize.width - frameSize.width) / 2,
(screenSize.height - frameSize.height) / 2);
frame.setVisible(true);
}
private void initialize() {
this.setSize(300, 200);
this.setContentPane(getJContentPane());
this.setTitle("事件接收器創(chuàng)建的應(yīng)用");
}
private JPanel getJContentPane() {
if (jContentPane == null) {
jContentPane = new JPanel();
jContentPane.setLayout(null);
jContentPane.add(getJButton(), null);
}
return jContentPane;
}
private JButton getJButton() {
if (jButton == null) {
jButton = new JButton();
jButton.setBounds(new Rectangle(87, 53, 114, 43));
jButton.setText("按鈕事件");
//加入動(dòng)作接收器
jButton.addActionListener(new JButton1_actionAdapter(this));
}
return jButton;
}
//創(chuàng)建動(dòng)作接收器類
class JButton1_actionAdapter implements java.awt.event.ActionListener {
// 聲明窗口類
ListenerCreateFrame2 adaptee;
// 取得傳入窗口類
JButton1_actionAdapter(ListenerCreateFrame2 adaptee) {
this.adaptee = adaptee;
}
//單擊事件
public void actionPerformed(ActionEvent e) {
javax.swing.JOptionPane.showMessageDialog(null, "按鈕被單擊");
}
}
}
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