public void itemStateChanged(ItemEvent e)
{
    if(e.getSource()==choosecolour) 
    {
        switch(colour.getSelectedIndex()) 
        {
            case 0:colourX = Color.red;break;
            case 1:colourX = Color.green;break;
            case 2:colourX = Color.blue;break;
        }
    }
}

public void itemStateChanged(ItemEvent e){
    if(e.getSource()==choosecolour){
        switch(colour.getSelectedIndex()){
            case 0:colourX = Color.red;break;
            case 1:colourX = Color.green;break;
            case 2:colourX = Color.blue;break;
        }
}

import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
public class new1 extends Applet implements AdjustmentListener,ItemListener
{
    private boolean mouseIn = true;
    private Panel bottomPanel;
    private Choice choosecolour;
    private Color colourX;
    private Scrollbar scrollX;
    private Scrollbar scrollY;
    private Scrollbar scrollBig;
    private Scrollbar scrollWide;
    int startX = 110;
    int startY = 170;
    int big = 80;
    int wide = 160;
    public void init()
    {
        choosecolour = new Choice();
        choosecolour.add("Cyan");
        choosecolour.add("Blue");
        choosecolour.add("Yellow");
        add(choosecolour);
        choosecolour.addItemListener(this);
        scrollX = new Scrollbar(Scrollbar.HORIZONTAL, 100, 1, 0, 200);
        scrollY = new Scrollbar(Scrollbar.VERTICAL, 100, 1, 0, 200);
        add(scrollX);
        add(scrollY);
        scrollX.addAdjustmentListener(this);
        scrollY.addAdjustmentListener(this);
        scrollBig = new Scrollbar(Scrollbar.HORIZONTAL, 50, 1, 0, 200);
        scrollWide = new Scrollbar(Scrollbar.VERTICAL, 100, 1, 0, 200);
        add(scrollBig);
        add(scrollWide);
        scrollBig.addAdjustmentListener(this);
        scrollWide.addAdjustmentListener(this);
        setLayout(new BorderLayout());
        bottomPanel = new Panel();
        add("South", bottomPanel);
        bottomPanel.setBackground(Color.yellow);
        bottomPanel.add(scrollX);
        bottomPanel.add(scrollY);
        bottomPanel.add(scrollBig);
        bottomPanel.add(scrollWide);
    }
    public void adjustmentValueChanged(AdjustmentEvent e)
    {
        startX = scrollX.getValue();
        startY = scrollY.getValue();
        big = scrollBig.getValue();
        wide = scrollWide.getValue();
        repaint();
    }
    public void paint(Graphics g)
    {
        //g.drawString("startX Value is "+startX,10,50);
        //g.drawString("startY Value is "+startY,10,80);
        //g.drawRect(startX,startY,big,wide);example
        g.setColor(Color.blue); //period
        g.fillOval(70, 70, 10, 10);
        g.setColor(Color.green);
        g.fillArc(90, 20, 40, 60, 45, 280); //Outer Arc for E
        g.setColor(Color.lightGray);
        g.fillArc(100, 29, 20, 40, 45, 360); //Inner Arc for E
        g.setColor(Color.green);
        g.fillRect(100, 42, 17, 10); //Bar for E
        g.setColor(Color.orange); //period
        g.fillOval(140, 70, 10, 10);
        g.setColor(Color.yellow);
        g.fillArc(160, 20, 40, 60, 45, 280); //Outer Arc for C
        g.setColor(Color.lightGray);
        g.fillArc(170, 29, 20, 40, 45, 360); //Inner Arc for C
        g.setColor(Color.magenta); //period
        g.fillOval(210, 70, 10, 10);
        g.setColor(Color.blue);
        g.fillArc(230, 20, 40, 60, 45, 280); //Outer Arc for E
        g.setColor(Color.lightGray);
        g.fillArc(240, 29, 20, 40, 45, 360); //Inner Arc for E
        g.setColor(Color.blue);
        g.fillRect(240, 42, 17, 10); //Bar for E
        g.setColor(Color.red); //period
        g.fillOval(280, 70, 10, 10);
        g.setColor(Color.green); //colours moveable rectangle
        g.fillRect(startX, startY, big, wide); //gives co ords for starting point
        g.setColor(Color.black);
        g.drawLine(110, 170, 150, 110); //tower
        g.drawLine(150, 110, 190, 170); //tower
        g.drawRect(110, 170, 80, 160); //main body
        g.setColor(Color.white);
        g.fillOval(130, 180, 40, 40); //clock face
        g.setColor(Color.black);
        g.drawLine(150, 200, 160, 190); //Big Hand
        g.drawLine(154, 190, 160, 190);
        g.drawLine(160, 190, 160, 195);
        g.drawLine(140, 200, 150, 200); //Little Hand
        g.drawLine(140, 200, 143, 197);
        g.drawLine(140, 200, 143, 203);
        g.setColor(Color.red);
        g.fillRect(130, 270, 40, 60); //disk
        g.setColor(Color.black);
        g.fillRect(132, 272, 3, 4);
        g.fillRect(163, 272, 3, 4);
        g.setColor(Color.gray);
        g.fillRect(140, 312, 23, 19); //slide
        g.setColor(Color.black);
        g.fillRect(143, 317, 6, 9);
        g.setColor(Color.red);
        g.drawString("LECE, Get London Computing", 80, 350);
    }
    public void itemStateChanged(ItemEvent e)
    {
        if(e.getSource() == choosecolour)
        {
            switch(choosecolour.getSelectedIndex())
            {
              case 0:
                  colourX = Color.red;
                  break;
              
              case 1:
                  colourX = Color.green;
                  break;
              
              case 2:
                  colourX = Color.blue;
                  break;
            }
        }
    }
    public void adjustmentChange(AdjustmentEvent e)
    {
        // I added this getGraphics() so your code would
        // compile, but it is better design to do call
        // repaint() and let your paint() method do the
        // appropriate rendering based on the current state
        // of your object(s).
        Graphics g = getGraphics();
 
        if(mouseIn == true)
        {
            g.setColor(Color.red);
            g.fillRect(23, 23, 10, 57); //L
            g.fillRect(23, 70, 33, 10);
        }
        else
        {
            g.setColor(Color.blue);
            g.fillRect(23, 23, 10, 57); //L
            g.fillRect(23, 70, 33, 10);
        }
    }
}