import java.util.*;import java.awt.*;import java.applet.Applet;import java.awt.event.*;
class Node { double x;}
class GraphPanel extends Panel   implements Runnable, MouseListener, MouseMotionListener {
    Thread relaxer;    boolean stress;   int nnodes;    Node nodes[] = new Node[100];     
    void addEdge() { Node n = new Node(); n.x =  180; nodes[nnodes++] = n; }
    public void run() {
       Thread me = Thread.currentThread();
	while (relaxer == me) {relax();try {Thread.sleep(100);} catch (InterruptedException e) {break;}	}
    }
  synchronized void relax() {for (int i=0;i<nnodes;i++) { Node n = nodes[i]; n.x += 7;} repaint();}
  public synchronized void update(Graphics g) {for(int i=0;i<nnodes;i++){g.drawLine((int)nodes[i].x,250,0,0);} }
  orio3 graph; GraphPanel(orio3 graph) {this.graph = graph;addMouseListener(this);  }
    public void mouseClicked(MouseEvent e) {  }    public void mousePressed(MouseEvent e) {  }
    public void mouseReleased(MouseEvent e) { }    public void mouseEntered(MouseEvent e) {  }
    public void mouseExited(MouseEvent e) {   }    public void mouseDragged(MouseEvent e) {  }
    public void mouseMoved(MouseEvent e) {    }
    public void start() {relaxer = new Thread(this);relaxer.start();} public void stop() {relaxer = null;}
}
public class orio3 extends Applet implements ActionListener, ItemListener {
    GraphPanel panel; Panel controlPanel;Button shake = new Button("Shake"); Checkbox stress = new Checkbox("Stress");
    public void init() {
	setLayout(new BorderLayout());
	panel = new GraphPanel(this);add("Center", panel);controlPanel = new Panel(); add("South", controlPanel);
	controlPanel.add(shake); shake.addActionListener(this);controlPanel.add(stress); stress.addItemListener(this);
       panel.addEdge(); 
    }
    public void destroy() {   remove(panel);    remove(controlPanel);   }
    public void start() {	panel.start();    }  public void stop() {	panel.stop();    }
    public void actionPerformed(ActionEvent e) {    }   public void itemStateChanged(ItemEvent e) {    }
}