?? listenercreateframe.java
字號:
package listener;
import javax.swing.*;
import java.awt.*;
public class ListenerCreateFrame extends JFrame {
private static final long serialVersionUID = 1L;
private JPanel jContentPane = null;
private JButton jButton = null;
public ListenerCreateFrame() {
super();
setDefaultCloseOperation(EXIT_ON_CLOSE);
initialize();
}
public static void main(String[] args) {
ListenerCreateFrame frame = new ListenerCreateFrame();
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 java.awt.event.ActionListener() {
//單擊事件
public void actionPerformed(java.awt.event.ActionEvent e) {
javax.swing.JOptionPane.showMessageDialog(null, "按鈕被單擊");
}
});
}
return jButton;
}
}
?? 快捷鍵說明
復(fù)制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -