import java.awt.*;
import java.awt.event.*;
import java.applet.Applet;
import java.util.LinkedList;

public class click extends Applet implements MouseListener, MouseMotionListener {
	LinkedList rings = new LinkedList();

	public click(){
		addMouseListener(this);
		addMouseMotionListener(this);
	}

	public boolean this_ring(myRing ring, int x, int y) {
		//System.out.println("x: " + x + "; y: " + y + "; ring.x: " + ring.x + "; ring.y: " + ring.y);
		int xvahe = x - ring.x;
		int yvahe = y - ring.y;
		if (xvahe <= 10 && xvahe >= 0 && yvahe <= 10 && yvahe >= 0)
			return true;
		else
			return false;
	}

	public void paint(Graphics g){
		for (int i = 0; i < rings.size(); i++) {
			myRing ring = (myRing)rings.get(i);
			g.drawOval(ring.x, ring.y, 10, 10);
		}
	}

	public void mousePressed(MouseEvent e) {
		boolean caught = false;
		if (rings.size() == 0)
			rings.add(new myRing(e.getX(), e.getY()));
		else {
			for (int i = 0; i < rings.size(); i++) {
				myRing ring = (myRing)rings.get(i);
				if (this_ring(ring, e.getX(), e.getY())) {
					caught = true;
					break;
				}
			}
			if (!caught)
				rings.add(new myRing(e.getX(), e.getY()));
		}
		repaint();
	}

	public void mouseDragged(MouseEvent e) {
		myRing ring = null;
		for (int i = 0; i < rings.size(); i++) {
			if (this_ring((myRing)rings.get(i), e.getX(), e.getY())) {
				ring = (myRing)rings.get(i);
				break;
			}
		}
		if (ring != null) {
			ring.x = e.getX() - 5;
			ring.y = e.getY() - 5;
			repaint();
		}
	}

	public void mouseReleased(MouseEvent e){}
	public void mouseClicked(MouseEvent e){}
	public void mouseEntered(MouseEvent e){}
	public void mouseExited(MouseEvent e){}
	public void mouseMoved(MouseEvent e){}

	public static void main(String[] argumendid) {
		Frame f=new Frame();
		f.add(new click());
		f.setSize(200, 200);
		f.setTitle("Click!");
		f.setVisible(true);
		f.addWindowListener(new React());
	}
}

class myRing {
	int x;
	int y;
	public myRing(int newx, int newy) {
		x = newx - 5;
		y = newy - 5;
	}
}

class React extends WindowAdapter {
	public void windowClosing(WindowEvent mywindow) {
		System.out.println("Closed");
		System.exit(0);
	}
}