java.lang.OutOfMemoryError: Java heap space
   at java.util.Arrays.copyOf(Arrays.java:3332)
   at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:124)
   at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:448)
   at java.lang.StringBuilder.append(StringBuilder.java:136)
   at org.netbeans.core.startup.logging.PrintStreamLogger.print(PrintStreamLogger.java:108)
   at org.netbeans.core.startup.logging.PrintStreamLogger.println(PrintStreamLogger.java:115)
   at org.javeleon.demos.spaceinvaders.Game.draw(Game.java:382)
   at org.javeleon.demos.spaceinvaders.Game.drawLoop(Game.java:496)
   at org.javeleon.demos.spaceinvaders.Game.access$2500(Game.java:27)
   at org.javeleon.demos.spaceinvaders.Game$DrawLoopRunner.run(Game.java:523)
   at java.util.TimerThread.mainLoop(TimerThread.java:555)
   at java.util.TimerThread.run(TimerThread.java:505)