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import java.awt.*;
import java.awt.event.*;
public class ActionEvent{
public static void main(String[] args){
Frame f = new Frame("xiaohua");
Button b = new Button();
Monitor m = new Monitor();
b.addActionListener(m);
f.pack();
f.setVisible(true);
}
}
class Monitor implements ActionListener{
void actionPerformed(ActionEvent e) { //actionPerformed(ActionEvent)
System.out.println("cool boy");
}
}
class Monitor implements ActionListener{
public void actionPerformed(java.awt.event.ActionEvent e) {
System.out.println("cool boy");
}
}