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import java.awt.Adjustable;
import java.awt.Color;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollBar;
public class ScrollBarColorSelect extends JFrame implements AdjustmentListener {
private JLabel redLabel;
private JLabel greenLabel;
private JLabel blueLabel;
private JScrollBar red;
private JScrollBar green;
private JScrollBar blue;
private JPanel colorPanel;
public ScrollBarColorSelect() {
setTitle("ColorSelect");
setSize(300, 200);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
Container contentPane = getContentPane();
JPanel p = new JPanel();
p.setLayout(new GridLayout(3, 2,3,3));
p.add(redLabel = new JLabel("Red 0"));
p.add(red = new JScrollBar(Adjustable.HORIZONTAL, 0, 0, 0, 255));
red.setBlockIncrement(16);
red.addAdjustmentListener(this);
p.add(greenLabel = new JLabel("Green 0"));
p.add(green = new JScrollBar(Adjustable.HORIZONTAL, 0, 0, 0, 255));
green.setBlockIncrement(16);
green.addAdjustmentListener(this);
p.add(blueLabel = new JLabel("Blue 0"));
p.add(blue = new JScrollBar(Adjustable.HORIZONTAL, 0, 0, 0, 255));
blue.setBlockIncrement(16);
blue.addAdjustmentListener(this);
contentPane.add(p, "South");
colorPanel = new JPanel();
colorPanel.setBackground(new Color(0, 0, 0));
contentPane.add(colorPanel, "Center");
}
public void adjustmentValueChanged(AdjustmentEvent evt) {
redLabel.setText("Red " + red.getValue());
greenLabel.setText("Green " + green.getValue());
blueLabel.setText("Blue " + blue.getValue());
colorPanel.setBackground(new Color(red.getValue(), green.getValue(),
blue.getValue()));
colorPanel.repaint();
}
public static void main(String[] args) {
JFrame f = new ScrollBarColorSelect();
f.show();
}
}
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