Link a scrollbar to a text value

[Bravogolf]

Hi all.

I'm still learning Java so bear with me! Basically, I have created a java application with three scrollbars and want to be be able to link the scrollbars to a text value so that as I increase scrollbar A from the beginning to the end, the text box of scrollbar A will increase in value from 0 up to 255 (and display that value in the text box). Can anyone help me?

 

[sedj]

Do you mean a ScrollBar (

http://java.sun.com/j2se/1.4.2/docs/api/java/awt/Scrollbar.html

) or a ScrollPane (

http://java.sun.com/j2se/1.4.2/docs/api/java/awt/ScrollPane.html)

?

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[Bravogolf]

Sorry, I mean the ScrollBar. Thanks for the link Any ideas?

 

[sedj]

You need to add a listener to your Scrollbar. Here is a simple example to get you started :

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



class Test {
	class AdjustmentListenerImpl implements AdjustmentListener {
		public void adjustmentValueChanged(AdjustmentEvent e) {
			System.out.println("Value changed to : " +e.getValue());
		}
	}

	public void doIt() {
		JFrame f = new JFrame();
		f.setSize(400, 400);
		Scrollbar  ranger = new Scrollbar(Scrollbar.HORIZONTAL, 0, 10, 0, 255);
		AdjustmentListenerImpl al = new AdjustmentListenerImpl();
		ranger.addAdjustmentListener(al);
		Panel p = new Panel();
		p.add(ranger);
 		f.getContentPane().add(p);
 		f.setVisible(true);
	}

 	public static void main(String args[]) throws Exception {
		new Test().doIt();
	}
}

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[Bravogolf]

Great, thank you very very much sedj :-D