public class DL extends JLabel{
public DL(){
super();
}
}
public class KJ extends JFrame {
DL dl;
JPanel p;
public KJ(){
p=new JPanel();
dl=new DL();
dl.addActionListener(this);
//这里没在addActionListener这个函数
}
public DL(){
super();
}
}
public class KJ extends JFrame {
DL dl;
JPanel p;
public KJ(){
p=new JPanel();
dl=new DL();
dl.addActionListener(this);
//这里没在addActionListener这个函数
}
{
public void actionPerformed(ActionEvent Event)
{
//写你的事件反应
}
});