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  1. JDK
  2. JDK-8140533

aContainer is not a focus cycle root of aComponent

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      Description

      FULL PRODUCT VERSION :


      A DESCRIPTION OF THE PROBLEM :
      when I use a JRadioButton with a ButtonGroup, and add it to JInternalFrame, then press the keyboard: <tab> cannot transfer focus to next componentUI, and in log.txt you can see the exception stack.
      But when I add the JRadioButton in a JDialog, without this problem at all.

      REGRESSION. Last worked in version 8u45


      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: aContainer is not a focus cycle root of aComponent
      at javax.swing.SortingFocusTraversalPolicy.getComponentAfter(SortingFocusTraversalPolicy.java:305)
      at javax.swing.LayoutFocusTraversalPolicy.getComponentAfter(LayoutFocusTraversalPolicy.java:106)

      REPRODUCIBILITY :
      This bug can be reproduced always.

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            Assignee:
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            Reporter:
            webbuggrp Webbug Group
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