In the following code snippet -

   192 if("Close".equals(e.getActionCommand()) && frame.isClosable())
   193 try { frame.setClosed(true); } catch (PropertyVetoException e0) { }
   194 else if("Iconify".equals(e.getActionCommand()) && frame.isIconifiable()) {
   195 if(!frame.isIcon())
   196 try { frame.setIcon(true); } catch (PropertyVetoException e1) { }
   197 else
   198 try { frame.setIcon(false); } catch (PropertyVetoException e1) { }
   199 } else if("Minimize".equals(e.getActionCommand()) && frame.isMaximizable()) {
   200 try { frame.setIcon(true); } catch (PropertyVetoException e2) { }
   201 } else if("Maximize".equals(e.getActionCommand()) && frame.isMaximizable()) {
   202 if(!frame.isMaximum()) {
   203 try { frame.setMaximum(true); } catch (PropertyVetoException e5) { }
   204 } else {
   205 try { frame.setMaximum(false); } catch (PropertyVetoException e6) { }
   206 }
   207 } else if("Restore".equals(e.getActionCommand()) && frame.isMaximum() && frame.isMaximizable()) {
   208 try { frame.setMaximum(false); } catch (PropertyVetoException e4) { }
   209 } else if("Restore".equals(e.getActionCommand()) && frame.isIcon() && frame.isIconifiable()) {
   210 try { frame.setIcon(false); } catch (PropertyVetoException e4) { }
   211 }


there are problems -

At line 207, frame.isMaximum() should be checked after frame.isMaximum().
At line 209, frame.isIconifiable() should be checked after frame.isIcon().