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  Unsigned Web start Image Loader  (Read 1264 times)
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Offline zoto

Senior Member


Medals: 4



« Posted 2009-06-12 02:30:12 »

I have this code for loading images from within a web start Jar. I'm wondering how good it is and what I can do to make it better.

The last function loadImg is really what I have problems with. I first load the image as an ImageIcon to not raise a security exception. Secondly I draw that Image into a BufferedImage because I can't cast it directly, as it's giving me a ToolkitImage instead of an Image.
Updated with information gained from another thread on JGO.

Usage is :
BufferedImage img = ImageLoader.loadImage("data/images/", "test.png");
or
BufferedImage img = ImageLoader.loadImage("test.png");
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import java.awt.Image;
import java.awt.image.BufferedImage;
import java.util.HashMap;
import javax.swing.ImageIcon;


public class ImageLoader {
   static final HashMap<String, BufferedImage> imgStore = new HashMap<String, BufferedImage>();
   static final ClassLoader classLoader = ImageLoader.class.getClassLoader();

   static public BufferedImage loadImage(String fileName){
      return loadImage("", fileName);
   }
   
   static public BufferedImage loadImage(String folderName, String fileName){
      BufferedImage retImg = imgStore.get(fileName);
      if(retImg == null){
         retImg = loadImg(folderName+fileName);
         imgStore.put(fileName, retImg);
      }
      return retImg;
   }

   static private BufferedImage loadImg(String filename) {
      try{
         return ImageIO.read(ImageLoader.class.getResourceAsStream(filename));
      }catch(Exception e){
         System.out.println("Error loading: "+filename);
         e.printStackTrace();
      }
      return null;
   }


}
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