java memory puzzle

[Venkata Kumar]

I have seen this program in JavaSpecialists.eu

   
public class JavaMemoryPuzzle {
  private final int dataSize =
      (int) (Runtime.getRuntime().maxMemory() * 0.6);

  public void f() {
    {
      byte[] data = new byte[dataSize];
    }

    byte[] data2 = new byte[dataSize];
  }

  public static void main(String[] args) {
    JavaMemoryPuzzle jmp = new JavaMemoryPuzzle();
    jmp.f();
  }
}

The program is throwing run time exception "java.lang.OutOfMemoryError". It looks like byte data pointed by data is not garbage collected after block scope. I am not sure why this is happening. Any comments on this?


Thanks
Venkat

[Adam Michalik]

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