Please chect it

Question

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

class changeColor extends JFrame implements AdjustmentListener
{
JScrollBar red;
JScrollBar green;
JScrollBar blue;
int cr=0;
int cg=0;
int cb=0;

changeColor()
{
super("SCROLLBAR DEMO");
setLayout(new FlowLayout());
setVisible(true);
setSize(300,300);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
red=new JScrollBar(JScrollBar.HORIZONTAL);
green=new JScrollBar(JScrollBar.HORIZONTAL);
blue=new JScrollBar(JScrollBar.HORIZONTAL);
add(red);
add(green);
add(blue);
red.addAdjustmentListener(this);
green.addAdjustmentListener(this);
blue.addAdjustmentListener(this);
}

public void adjustmentValueChanged(AdjustmentEvent ae)
{

if(ae.getSource()==red)
cr=ae.getValue();
else if(ae.getSource()==green)
cg=ae.getValue();
else if(ae.getSource()==blue)

Answer 1

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