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Thread: Loop through JLabel and change JLabel

  1. #1
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    Post Loop through JLabel and change JLabel

    Hello Guys,

    Bit stuck here I'm trying to loop through a JLabel and change the label after sleeping for a second, the sleep is working fine but the JLable won't change it just stays static.

    Thanks

    here is my code replicated with the same problem

    import javax.swing.*;
     
    import java.awt.*;
     
    public class JpanelTest {
     
    	public static void main(String[] args){
     
    		try{
    		Thread myThread = new Thread();
    		JFrame frame = new JFrame();
     
    		frame.setSize(300,300);
    		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    		frame.setVisible(true);
     
    		Container contain = frame.getContentPane();
     
     
    		JPanel panel = new JPanel();
    		frame.add(panel);
    		for(int i = 1; i < 6; i++){
    		JLabel label = new JLabel("File number " + i + " is loaded");
    		panel.add(label);
    		myThread.sleep(1000);
    		contain.add(panel);
    		System.out.println("1 + " + i);
    		}
    		}
     
    		catch(InterruptedException e)
    	    {
    	    }
     
    }
    }

    I want it to look like "File number 1 is loaded"
    then clears and "File number 2 is loaded" etc

    Thanks
    Last edited by JoeBrown; April 11th, 2012 at 11:06 AM. Reason: solved


  2. #2
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    Default Re: Loop through JLabel and change JLabel

    Ok, I got it solved.

    I need to use the

    panel.validate();
    label.repaint();

    and then panel.remove(label);

  3. #3
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    Default Re: Loop through JLabel and change JLabel

    Glad you got it solved. As just a note, you might wish to read the following
    Threads and Swing
    You should do updates to Swing on the EDT

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