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

public class MouseEvents extends JFrame implements MouseListener, MouseMotionListener {

    JFrame frame;

    public static void main(String args[]) {
        MouseEvents obj = new MouseEvents();
        obj.go();
    }

    public void go() {
        frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 300);
        frame.setVisible(true);
        addMouseListener(this);
        addMouseMotionListener(this);
    }

    public void mouseClicked(MouseEvent me) {
    }

    public void mouseEntered(MouseEvent me) {
    }

    public void mouseExited(MouseEvent me) {
    }

    public void mousePressed(MouseEvent me) {
    }

    public void mouseReleased(MouseEvent me) {
    }

    public void mouseDragged(MouseEvent me) {
        repaint();
    }

    public void mouseMoved(MouseEvent me) {
        Graphics g = getGraphics();
        g.drawOval(me.getX(), me.getY(), 30, 30);
    }

}