Java by API/javax.imageio.event/IIOReadProgressListener

implements IIOReadProgressListener

   <source lang="java">
 

import java.awt.image.BufferedImage; import java.io.File; import java.io.FileInputStream; import java.util.Iterator; import javax.imageio.ImageIO; import javax.imageio.ImageReader; import javax.imageio.ImageWriter; import javax.imageio.event.IIOReadProgressListener; import javax.imageio.stream.ImageInputStream; import javax.imageio.stream.ImageOutputStream; public class Main{

 static public void main(String args[]) throws Exception {
   FileInputStream fin = new FileInputStream("a.gif");
   Iterator readers = ImageIO.getImageReadersBySuffix("GIF");
   ImageReader imageReader = (ImageReader) readers.next();
   ImageInputStream iis = ImageIO.createImageInputStream(fin);
   imageReader.setInput(iis, false);
   imageReader.addIIOReadProgressListener(new IIOReadProgressListener() {
     public void imageComplete(ImageReader source) {
       System.out.println("image complete " + source);
     }
     public void imageProgress(ImageReader source, float percentageDone) {
       System.out.println("image progress " + source + ": " + percentageDone + "%");
     }
     public void imageStarted(ImageReader source, int imageIndex) {
       System.out.println("image #" + imageIndex + " started " + source);
     }
     public void readAborted(ImageReader source) {
       System.out.println("read aborted " + source);
     }
     public void sequenceComplete(ImageReader source) {
       System.out.println("sequence complete " + source);
     }
     public void sequenceStarted(ImageReader source, int minIndex) {
       System.out.println("sequence started " + source + ": " + minIndex);
     }
     public void thumbnailComplete(ImageReader source) {
       System.out.println("thumbnail complete " + source);
     }
     public void thumbnailProgress(ImageReader source, float percentageDone) {
       System.out.println("thumbnail started " + source + ": " + percentageDone + "%");
     }
     public void thumbnailStarted(ImageReader source, int imageIndex, int thumbnailIndex) {
       System.out.println("thumbnail progress " + source + ", " + thumbnailIndex + " of "
           + imageIndex);
     }
   });
   BufferedImage image = imageReader.read(0);
   Iterator imageWriters = ImageIO.getImageWritersBySuffix("JPG");
   ImageWriter imageWriter = (ImageWriter) imageWriters.next();
   File file = new File("b.JPG");
   ImageOutputStream ios = ImageIO.createImageOutputStream(file);
   imageWriter.setOutput(ios);
   imageWriter.write(image);
 }

}

 </source>