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

class One extends JFrame {
  One() {
    Two b = new Two();
    Container c = this.getContentPane(); 
    c.add(b); 
    this.setVisible(true); 
    this.setSize(400, 400); 
    this.setDefaultCloseOperation( 3 ); 
  } 
  public static void main(String[] args) {
    One a = new One(); 
  } 
}

class Two extends JComponent implements MouseMotionListener {
  Circle eye; 
  Line line; 
  Two() {
    this.eye = new Circle( new Point(150, 150), 30 ); 
    this.addMouseMotionListener(this); 
  } 
  public void mouseMoved(MouseEvent e) {
    int x = e.getX(), y = e.getY(); 
    System.out.println( "(" + x + ", " + y + ")" ); 
    this.line = new Line( this.eye.center, new Point( x, y ) ); 
    this.repaint(); 
  }
  public void mouseDragged(MouseEvent e) {
    System.out.println("Mouse dragged..."); 
  }
  public void paintComponent(Graphics g) {
    this.eye.draw(g); 
    if (line != null) 
      this.line.draw(g); 
  }
}

class Circle {
  Point center;
  int radius;
  Circle(Point c, int r) {
    this.center = c;
    this.radius = r; 
  }  
  void draw(Graphics g) {
    g.drawOval(this.center.x - this.radius, 
               this.center.y - this.radius, 
               this.radius * 2, 
               this.radius * 2); 
  }
}

class Point {
  int x, y;
  Point(int x, int y) {
    this.x = x; 
    this.y = y; 
  }
}

class Line {
  Point a, b; 
  Line(Point a, Point b) {
    this.a = a; 
    this.b = b; 
  }
  void draw(Graphics g) {
    g.drawLine(a.x, a.y, b.x, b.y); 
  } 
}