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);
}
}