mymonitor.java

来自「由浅入深的介绍JAVAse的基本编程思想」· Java 代码 · 共 9 行

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class MyMonitor implements ActionListener {
    public void actionPerformed(ActionEvent e) {
        System.out.println("A button has been pressed!");    
    }
}