Slider Application Example In java

Slider Application Example In java

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

class SliderExample extends JFrame implements ChangeListener
{
private JSlider scrollerR,scrollerG,scrollerB;
private JLabel lblHead,labelR,labelG,labelB;
private Label labelColor;
private JPanel topPanel;

public SliderExample()
{
setTitle( "Slider Application" );
setSize( 330, 280 );
setBackground( Color.gray );

topPanel = new JPanel();
topPanel.setLayout( null );
topPanel.setDoubleBuffered( false );
getContentPane().add( topPanel );

// Create the labels
lblHead = new JLabel( "https://www.facebook.com/groups/java.satya/" );
lblHead.setBounds( 20, 0, 350, 15 );
topPanel.add( lblHead ); 
labelR = new JLabel( "Red" );
labelR.setBounds( 20, 15, 250, 20 );
topPanel.add( labelR );

labelG = new JLabel( "Green" );
labelG.setBounds( 20, 75, 250, 20 );
topPanel.add( labelG );

labelB = new JLabel( "Blue" );
labelB.setBounds( 20, 135, 250, 20 );
topPanel.add( labelB );

labelColor = new Label();
labelColor.setBounds( 100, 210, 100, 30 );
labelColor.setBackground( new Color( 0, 0, 0 ) );
topPanel.add( labelColor );

// Create the scrollbars
scrollerR = new JSlider( SwingConstants.HORIZONTAL,
0, 255, 0 );
scrollerR.setBounds( 20, 35, 290, 40 );
scrollerR.setMajorTickSpacing( 40 );
scrollerR.setMinorTickSpacing( 10 );
scrollerR.setPaintTicks( true );
scrollerR.setPaintLabels( true );
scrollerR.addChangeListener( this );
topPanel.add( scrollerR );

scrollerG = new JSlider( SwingConstants.HORIZONTAL,
0, 255, 0 );
scrollerG.setBounds( 20, 95, 290, 40 );
scrollerG.setMajorTickSpacing( 40 );
scrollerG.setMinorTickSpacing( 10 );
scrollerG.setPaintTicks( true );
scrollerG.setPaintLabels( true );
scrollerG.addChangeListener( this );
topPanel.add( scrollerG );

scrollerB = new JSlider( SwingConstants.HORIZONTAL,
0, 255, 0 );
scrollerB.setBounds( 20, 155, 290, 40 );
scrollerB.setMajorTickSpacing( 40 );
scrollerB.setMinorTickSpacing( 10 );
scrollerB.setPaintTicks( true );
scrollerB.setPaintLabels( true );
scrollerB.addChangeListener( this );
topPanel.add( scrollerB );
}

// Watch for scroll bar adjustments
public void stateChanged( ChangeEvent event )
{
// The event came from our scrollers handle it.
if( event.getSource() == scrollerR ||
event.getSource() == scrollerG ||
event.getSource() == scrollerB )
{
// Get the current color settings
int iRed = scrollerR.getValue();
int iGreen = scrollerG.getValue();
int iBlue = scrollerB.getValue();

// Update the color chip
labelColor.setBackground(
new Color( iRed, iGreen, iBlue ) );

lblHead.setForeground(
new Color( iRed, iGreen, iBlue ) );

}
}

public static void main( String args[] )
{
// Create an instance of the test application
SliderExample mainFrame = new SliderExample();
mainFrame.setVisible( true );
mainFrame.setDefaultCloseOperation(mainFrame.EXIT_ON_CLOSE);
}
}