JComboBox change drop-down popup

Question

basically is popup for a JComboBox displayed below its derived JTextField, how can change direction from bellowed orientations for JComboBox\'s popup and display JComboBox\'

Answer 1

On Mac OS X, I get the following exception. Apparently, com.apple.laf.AquaComboBoxRenderer is not a subclass of BasicComboBoxRenderer.

Addendum: The ClassCastException is gone, and a screen capture of "EDIT 2nd. Code for MacOX" appears below:

Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException:
    com.apple.laf.AquaComboBoxRenderer cannot be cast to
    javax.swing.plaf.basic.BasicComboBoxRenderer
  at HighRowCombo.makeUI(HighRowCombo.java:26)
  at HighRowCombo$1.run(HighRowCombo.java:13)
  at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
  at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:678)
  at java.awt.EventQueue.access$000(EventQueue.java:86)
  at java.awt.EventQueue$1.run(EventQueue.java:639)
  at java.awt.EventQueue$1.run(EventQueue.java:637)
  at java.security.AccessController.doPrivileged(Native Method)
  at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
  at java.awt.EventQueue.dispatchEvent(EventQueue.java:648)
  at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
  at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
  at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
  at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
  at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
  at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)