Java program to create frame with three scrolls & change the background color using RGB function.
Below code is used to create frame with three scrolls & change the background color using RGB function:
import java.awt.*;
import java.awt.event.*;
public class ScrollDemo extends Frame implements AdjustmentListener
{
Scrollbar redScroll, greenScroll, blueScroll;
Label redLabel, greenLabel, blueLabel;
Panel p1;
public ScrollDemo()
{
addWindowListener(new MyWindowAdapter());
setBackground(Color.lightGray);
p1 = new Panel();
p1.setLayout(new GridLayout(3, 2, 5, 5));
redScroll = new Scrollbar(Scrollbar.HORIZONTAL, 0, 0, 0, 255);
p1.add(redLabel = new Label("RED"));
redLabel.setBackground(Color.white);
p1.add(redScroll);
greenScroll = new Scrollbar(Scrollbar.HORIZONTAL, 0, 0, 0, 255);
p1.add(greenLabel = new Label("GREEN"));
greenLabel.setBackground(Color.white);
p1.add(greenScroll);
blueScroll = new Scrollbar(Scrollbar.HORIZONTAL, 0, 0, 0, 255);
p1.add(blueLabel = new Label("BLUE"));
blueLabel.setBackground(Color.white);
p1.add(blueScroll);
redScroll.addAdjustmentListener(this);
greenScroll.addAdjustmentListener(this);
blueScroll.addAdjustmentListener(this);
add(p1,"South");
setTitle("Playing With Colors");
setSize(450,325);
setVisible(true);
}
public void adjustmentValueChanged(AdjustmentEvent e)
{
int rv = redScroll.getValue();
int gv = greenScroll.getValue();
int bv = blueScroll.getValue();
redLabel.setText("RED: "+ rv);
greenLabel.setText("GREEN: "+ gv);
blueLabel.setText("BLUE: "+ bv);
Color clr1 = new Color(rv, gv, bv);
setBackground(clr1);
}
public static void main(String args[])
{
new ScrollDemo();
}
}
class MyWindowAdapter extends WindowAdapter
{
public void windowClosing(WindowEvent we)
{
System.exit(0);
}
}
Thank You.