This problem occurs with the X11/Motif version of the Java Virtual Machine.
The JVM process size grows each time Graphics.drawImage() is used to scale a given offscreen image.

To reproduce the problem, compile the attached Stretch.java class and run it as a Java application ('java Stretch'). Resize and/or maximize the window while monitoring the java process size. The problem is very obvious when restoring the window after maximizing it: the process grows by approx. 1 megabyte!

Please note that all Image and Graphics instances are disposed of when not used anymore.