import java.awt.image.BufferedImage;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;

import javax.media.jai.NullOpImage;
import javax.media.jai.OpImage;
import javax.media.jai.PlanarImage;

import com.sun.media.jai.codec.ImageCodec;
import com.sun.media.jai.codec.ImageDecoder;
import com.sun.media.jai.codec.ImageEncoder;
import com.sun.media.jai.codec.TIFFEncodeParam;

public class MultipleTiff {

    public static void main(String[] args) {
        String[] files = { "test1.tif", "test2.tif", "test3.tif" };
        MultipleTiff mt = new MultipleTiff();
        mt.saveMultipleTiff(mt.loadImages("img/", files), "out/", "out.tif");
    }

    private BufferedImage[] loadImages(String inputDir, String[] files) {
        BufferedImage images[] = new BufferedImage[files.length];
        FileInputStream stream = null;
        PlanarImage pi;
        for (int i = 0; i < files.length; i++) {
            try {
                stream = new FileInputStream(inputDir + files[i]);
                ImageDecoder decoder = ImageCodec.createImageDecoder("tiff",
                        stream, null);
                pi = new NullOpImage(
                        decoder.decodeAsRenderedImage(), null, null,
                        OpImage.OP_IO_BOUND);
                images[i] = pi.getAsBufferedImage();
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    stream.close();
                }catch(IOException ioe) {
                }
            }
        }
        return images;
    }

    private void saveMultipleTiff(BufferedImage[] images, String outputDir,
            String imageName) {
        TIFFEncodeParam params = new TIFFEncodeParam();
        OutputStream out = null;
        try {
            out = new FileOutputStream(outputDir + imageName);
            ImageEncoder encoder = ImageCodec.createImageEncoder("tiff", out,
                    params);
            ArrayList<BufferedImage> list = new ArrayList<BufferedImage>();
            for (int i = 1; i < images.length; i++) {
                list.add(images[i]);
            }
            params.setExtraImages(list.iterator());
            encoder.encode(images[0]);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try{
                out.close();
            } catch(IOException ioe){}
        }
    }
}