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import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.geom.Line2D;

import javax.swing.JPanel;
import javax.swing.JFrame;

/**
 *
 * @author htrefftz
 */
public class EventoMouse
    extends JPanel
    implements MouseListener {


    int C1x = 150;
    int C1y = 150;
    int C2x = 100;
    int C2y = 100;
    boolean C1s = false;
    boolean C2s = false;

    public EventoMouse() {
        this.addMouseListener(this);
    }

    @Override
  public void paint(Graphics g) {
      super.paint(g);
      g.setColor(Color.BLUE);
      if (C1s || C2s) g.drawString("Selected", 5, 11); else g.drawString("Not selected", 5, 11);
      g.setColor(Color.BLUE);
      g.fillOval(C1x - 30, C1y - 30, 60, 60);
      g.setColor(Color.GREEN);
      g.fillOval(C2x - 30, C2y - 30, 60, 60);
  }


    @Override
  public void mouseClicked(MouseEvent e) {
      if (!C1s && !C2s)
      {
        int distanceToCircle1 = (int)Math.sqrt((e.getX() - C1x)*(e.getX() - C1x)+(e.getY() - C1y)*(e.getY() - C1y));
        int distanceToCircle2 = (int)Math.sqrt((e.getX() - C2x)*(e.getX() - C2x)+(e.getY() - C2y)*(e.getY() - C2y));
        C1s = (distanceToCircle1 < 30);
        C2s = (distanceToCircle2 < 30);
        System.out.println(distanceToCircle1);
        repaint();
      }
      else
      {
        if (C1s)
        {
            C1x = e.getX();
            C1y = e.getY();
        } else if (C2s)
        {
            C2x = e.getX();
            C2y = e.getY();
        }
        C1s = false;
        C2s = false;
        repaint();
      }
  }

    @Override
  public void mouseEntered(MouseEvent e) {}

    @Override
  public void mouseExited(MouseEvent e) {}

    @Override
  public void mousePressed(MouseEvent e) {
  }

    @Override
  public void mouseReleased(MouseEvent e) {

  }

  public static void main(String[] args) {
      // Crear un nuevo Frame
      JFrame frame = new JFrame("Eventos del Mouse");
      // Al cerrar el frame, termina la ejecución de este programa
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      // Agregar un JPanel que se llama Points (esta clase)
      EventoMouse ev = new EventoMouse();
      frame.add(ev);
      // Asignarle tamaño
      frame.setSize(500, 500);
      // Poner el frame en el centro de la pantalla
      frame.setLocationRelativeTo(null);
      // Mostrar el frame
      frame.setVisible(true);
  }


}