?? testactionevent.java
字號:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TestActionEvent {
public static void main(String args[]) {
JFrame f = new JFrame("Test");
Button b = new Button("Press Me!");
Monitor bh = new Monitor();
b.addActionListener(bh);
f.getContentPane().add(b,BorderLayout.CENTER);
f.pack(); f.setVisible(true);
//f.setLocation(300,300);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}}
class Monitor implements ActionListener {
public void actionPerformed(ActionEvent e) {
System.out.println("a button has been pressed"); }}
?? 快捷鍵說明
復制代碼
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 + -