Automatic scroll of JSlider

[gbayo1]

Hi, I was just wondering would anybody be able to show us how to use a button, that when pressed, automatically scrolls a JSlider across say from 0 - 100 at a certain speed or whatever.

If anyone can help, I'd really appreciate it

[sivadhas2006]

Hi,

This may satisfy your need...

 
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JSlider;
public class TestFrame extends JFrame
{
private static final long serialVersionUID = 1L;
JButton				 m_btnMoveSlider = null;
JSlider				 m_objSlider	 = null;
public class TestThread extends Thread
{
		public void run()
		{
			super.run();
			int nValue = m_objSlider.getValue();
			int nMaxValue = m_objSlider.getMaximum();
			do
			{
			 nValue = nValue + 5;
			 try
			 {
				 Thread.sleep(100);
			 }
			 catch (InterruptedException e)
			 {
				 e.printStackTrace();
			 }
			 m_objSlider.setValue(nValue);
			}
			while (nValue < nMaxValue);
			m_btnMoveSlider.setEnabled(true);
			m_btnMoveSlider.requestFocus();
		}
};
TestFrame()
{
		m_btnMoveSlider = new JButton("Move Slider");
		m_objSlider = new JSlider(0, 100, 0);
		m_btnMoveSlider.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent a_e)
			{
			 m_objSlider.setValue(0);
			 m_btnMoveSlider.setEnabled(false);
			 TestThread objThread = new TestThread();
			 objThread.start();
			}
		});
		Container con = getContentPane();
		con.setLayout(new BorderLayout());
		con.add(m_btnMoveSlider, BorderLayout.NORTH);
		con.add(m_objSlider, BorderLayout.CENTER);
		setSize(500, 100);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args)
{
		TestFrame objJFrame = new TestFrame();
		objJFrame.show();
}
};

Regards,
M.Sivadhas.

[aijdissanayake]

moving sliders

@sivadhas2006
your answer was really helpful to me too. Thanks