//////////// part 1: MyCanvas.java ///////////////

import java.awt.*;
import java.applet.*;

class MyCanvas extends Canvas {

   public void paint (Graphics g) {
      g.setColor(Color.yellow);
      g.drawRect(0,0,100,100);
      g.setColor(Color.white);
      g.fillRect(1,1,99,99);
      g.setColor(Color.red);
      g.drawOval(50,50,50,50);
      g.drawString("Canvas",40,40);
   }

}



//////////// part 2: ComponentsDemo.java ///////////////

import java.awt.*;
import java.applet.*;

public class ComponentsDemo extends Applet {

  Panel p1,p2,p3,p4,p5,p6,p7,p8,p9,p10,p11,p12,p13,p14,p15;

  Panel pn,ps,pc,pe,pw;

  public void init() {

      p1= new Panel();
      p2= new Panel();
      p3= new Panel();
      p4= new Panel();
      p5= new Panel();
      p6= new Panel();
      p7= new Panel();
      p8= new Panel();
      p9= new Panel();
      p10= new Panel();
      p11= new Panel();
      p12= new Panel();
      p13= new Panel();
      p14= new Panel();
      p15= new Panel();

      pn= new Panel();
      FlowLayout fl = new FlowLayout(FlowLayout.CENTER,50,30);
      pn.setLayout(fl);

      ps= new Panel();

      pc= new Panel();
      pc.setLayout(fl);

      pe= new Panel();

      pw= new Panel();


      setLayout(new BorderLayout());

      p1.setLayout(new BorderLayout());
      p1.add("North",new Label("A Button"));
      p1.add("Center",new Button("Button 1"));
      pn.add(p1);

      Canvas c = new MyCanvas();
      c.setSize(110,110);
      p3.add(c);
      pc.add(p3);

     
      p4.setLayout(new BorderLayout());
      p4.add("North",new Label("Checkbox"));
      p4.add("Center",new Checkbox("Anytime"));
      p4.add("South",new Checkbox("Non-stop"));
      pn.add(p4);

      p5.setLayout(new BorderLayout());
      p5.add("North",new Label("CheckboxGroup"));
      p6 = new Panel();
      CheckboxGroup lines = new CheckboxGroup();
      Checkbox m1 = new Checkbox("United Airline",lines, false), 
               m2 = new Checkbox("Delta",lines, false), 
               m3 = new Checkbox("Southwest",lines, true), 
               m4 = new Checkbox("NorthAmerica",lines, false); 
      p6.add("South",m1);
      p6.add("South",m2);
      p6.add("South",m3);
      p6.add("South",m4);
      p5.add(p6);
      pn.add(p5);

      List lst = new List();
      lst.add("Sears");
      lst.add("Ross");
      lst.add("Walmart");
      lst.add("Kmart");
      p7.setLayout(new BorderLayout());
      p7.add("North",new Label("List"));
      p7.add("Center",lst);
      pc.add(p7); 

      Choice ch = new Choice();
      ch.add("Mr.");
      ch.add("Ms.");
      ch.add("Mrs.");
      p8.setLayout(new BorderLayout());
      p8.add("North",new Label("Choice"));
      p8.add("Center",ch);
      pc.add(p8);



      Scrollbar sv = new Scrollbar(Scrollbar.VERTICAL,0,50,0,255);
      p9.add(sv);
      p9.add(new Label("Scrollbar (vertical)"));
      pc.add(p9);

      p10.setLayout(new BorderLayout());
      p10.add("North",new Label("Scrollbar (horizontal)"));
      Scrollbar sh = new Scrollbar(Scrollbar.HORIZONTAL,0,100,0,300);
      p10.add("Center",sh);
      pc.add(p10);


      p11.setLayout(new BorderLayout());
      p11.add ("North",new Label("TextField"));
      p11.add ("Center",new TextField("Hello! TextField.",  20));
      pc.add (p11);

      p12.setLayout(new BorderLayout());
      p12.add ("North",new Label("TextArea"));
      p12.add ("Center",new TextArea("Hello! TextArea.", 4, 20));
      pc.add (p12);

      add("North",pn);
      add("South",ps);
      add("Center",pc);
      add("East",pe);
      add("West",pw);

  }

  public void paint ( Graphics g ) { 

     // All the components are generated. 
     // I have nothing else to paint.

  }
}