Unable to prevent resizing.

According to the JDK1.1beta3 documentation, the following frame should
not be able to be resized because of the setResizable method, but it is resizable.

import java.awt.Frame;

class setResizableError {
     setResizableError() {
     }
     public static void main(String args[]) {
          Frame my_Frame = new Frame();
          my_Frame.setSize(541, 758);
          boolean resize_Variable = false;
          my_Frame.setResizable(resize_Variable);
          my_Frame.pack();
          my_Frame.show();
     }
}