Java Programming

imageBytes[] does not seem to ever be garbage collected. I've pinpointed a SINGLE LINE that, when commented out, will prevent the memory leak. What could possibly be wrong with this line?

Running this code results in a "OutOfMemoryError: Java heap space" after roughly a minute on my machine. I'm using JRE version 1.5.0_08.

import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.*;
import java.io.*;

// creates images to send to ImageConsumer
public class ImageProducer {
	static BufferedImage bufferedImage;
	static Robot robo;
	static byte[] imageBytes;

	public static void main(String args[]) {
		try {
			robo = new Robot();
		} catch(Exception e) {
			e.printStackTrace();
		}
		
		PipedOutputStream pos = new PipedOutputStream();
		new ImageConsumer(pos).start();
		bufferedImage = robo.createScreenCapture(new Rectangle(Toolkit.getDefaultToolkit().getScreenSize()));
		
		try {
			ObjectOutputStream oostream = new ObjectOutputStream(pos);
			ByteArrayOutputStream baos = new ByteArrayOutputStream();
			ImageIO.write(bufferedImage, "JPG", baos);
			baos.flush();
			imageBytes = baos.toByteArray();
			
			while (true) {
				ImageIO.write(bufferedImage, "JPG", baos);
				baos.flush();
				/********************************************************/
				// THIS SEEMS TO BE WHERE THE MEMORY LEAK OCCURS: imageBytes
				// If you comment the following line out, there will be no 
				// memory leak. Why?  I ask that you help me solve this.
				imageBytes = baos.toByteArray(); 
				/********************************************************/
				baos.reset();
				oostream.writeObject(imageBytes);
				pos.flush();
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

// This thread reads the image data into bImg
class ImageConsumer extends Thread {
	BufferedImage bImg;
	PipedInputStream pis;
	ImageConsumer(PipedOutputStream pos) {
		try {
			pis = new PipedInputStream(pos);
		} catch (IOException e) { e.printStackTrace();}
	}
	public void run() {
		try {
			ObjectInputStream oinstream = new ObjectInputStream(pis);
			while (true) {
				byte[] imageBytes = (byte[])oinstream.readObject();
				ByteArrayInputStream bais = new ByteArrayInputStream(imageBytes);
				bImg = ImageIO.read(bais);
			}
		} catch (Exception e) {e.printStackTrace();}
	}
}