急求答案..到底哪里错了
import java.awt.*;
import javax.swing.*;
import java.awt.Event;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class CJ3 extends JFrame implements ActionListener
{
CJ3()
{
}
public void actionPerformerd(ActionEvent e)
{
}
public static void main (String args[])
{
new CJ3();
}
}