hak

import javax.swing.*;
import java.awt.*;

public class Test extends JFrame
{
    JLabel j1;
    ButtonListener1 bl1;
    ButtonListener2 bl2 ;
    int count =0;
    public Test()
    {
        Container C = getContentPane();
        C.setTitle ("exemple");
        JLabel j1=new JLabel("0");
        JButton b1 = new JButton ;
        JButton b2 = new JButton ;
        bl2 = new ButtonListener2() ;
        bl1 = new ButtonListener1();
        b1.addActionListener(bl1);
        b2.addActionListener(bl2);
        C.add(b1);
        C.add(b2);
        C.add(j1);

    }
    private class ButtonListener1 implemets ActionListener
    {
        count = count +1 ;
        j1.setText (String.valueOf(count));
    }
    private class ButtonListener2 implemets ActionListener
    {
        count = count -1 ;
        j1.setText (String.valueOf(count));
    }



    public static void main(String[] args) {
        new Test();
    }
}