Converting to an Animated GIF or something similar

[Yohan Weerasinghe]

Hi, please have a look at the following code (This is a test code, that's why you can see just a one class with a subclass and a simple GUI )

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

public class SlideShow extends JFrame implements ActionListener
{
    JLabel label,testLabel;
    String r[];
    Icon icon;
    JPanel panel;
    JButton ok, create;
    
    thread1 t1 = new thread1();
    
    public SlideShow()
    {
        r = new String[4];
        r[0] = "C:/Users/Public/Pictures/Sample Pictures/Chrysanthemum.jpg";
        r[1] = "C:/Users/Public/Pictures/Sample Pictures/Desert.jpg";
        r[2] = "C:/Users/Public/Pictures/Sample Pictures/Hydrangeas.jpg";
        r[3] = "C:/Users/Public/Pictures/Sample Pictures/Jellyfish.jpg";
        

        
        
        ok = new JButton("click");
        ok.addActionListener(this);
        create = new JButton("Create");
        
        
        label = new JLabel("Will change");
        testLabel = new JLabel("Testing");
        
        
        panel = new JPanel();
        panel.setLayout(new FlowLayout());
        panel.add(label);
        panel.add(testLabel);
        
        
        JPanel panel2 = new JPanel();
        panel2.setLayout(new FlowLayout());
        panel2.add(ok);
        panel2.add(create);
        
        JPanel main = (JPanel)getContentPane();
        main.setLayout(new BorderLayout());
        main.add(panel,"Center");
        main.add(panel2,"South");
       
    }
    
   public void actionPerformed(ActionEvent ae)
   {
       t1.start();
       ok.setEnabled(false);
   }
    
    class thread1 extends Thread
    {
        
        public void run()
        {
            int i=0;
            int tester = r.length-1;
            
          while(true)
          {
            for(i=0; i<r.length; i++)
            {
                icon = new ImageIcon(r[i]);
                
                label.setEnabled(false);
                label.setDisabledIcon(icon);               
                
                
                try
                {
                    Thread.sleep(1000);
                }
                catch(Exception e)
                {
                    JOptionPane.showMessageDialog(null,e);
                }
            }
            
            for(i=tester; i>0; i--)
            {
                 testLabel.setText(String.valueOf(i));          
                
                 icon = new ImageIcon(r[i]);
                
                label.setEnabled(false);
                label.setDisabledIcon(icon);   
                
                try
                {
                    Thread.sleep(1000);
                }
                catch(Exception e)
                {
                    JOptionPane.showMessageDialog(null,e);
                }
            }
          }
        }
    }
    
    public static void main(String[]args)
    {
        SlideShow s = new SlideShow();
        s.setVisible(true);
        s.setSize(700,700);
        s.validate();
        s.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

Now, what I need is, when the user click on the "Create" button, the generated output slideshow, should be saved in the user's computer as an Animated GIF or SWF or something that which can show the animated images when doubled clicked, or opened in web browser (Like animated GIF). I ahve no idea about how to do this. Please help me to achieve my task.. Thanks

[Darryl Burke]

Searching the net for "java save animated gif" gave a few million results, and at least some of the first-page results were accompanied by code.

[Ulf Dittmer]

Note that GIF is an 8-bit format, so any conversion from JPEG to GIF will almost certainly result in a loss of quality. It will also present the non-trivial problem of which colors to use in the resulting GIF.

[Yohan Weerasinghe]

Darryl Burke wrote:Searching the net for "java save animated gif" gave a few million results, and at least some of the first-page results were accompanied by code.

Thanks for the info. Yes, I saw some of them. Will check and be back...

[Yohan Weerasinghe]

Ulf Dittmer wrote:Note that GIF is an 8-bit format, so any conversion from JPEG to GIF will almost certainly result in a loss of quality. It will also present the non-trivial problem of which colors to use in the resulting GIF.

Thanks for the info. I will definitely keep this in my mind when I am actually doing the project...