FULL PRODUCT VERSION :
java version "1.7.0_01"
Java(TM) SE Runtime Environment (build 1.7.0_01-b08)
Java HotSpot(TM) 64-Bit Server VM (build 21.1-b02, mixed mode)

(but this problem also exists in 1.5, 1.6, etc)

ADDITIONAL OS VERSION INFORMATION :
Linux beast 3.0.0-12-generic #20-Ubuntu SMP Fri Oct 7 14:56:25 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux


A DESCRIPTION OF THE PROBLEM :
BreakIterator has problems with some supplementary character sequences. When iterating text that contains these characters, it throws an internal ArrayIndexOutOfBoundsException in RuleBasedBreakIterator.lookupState

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the included test program

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
it should not throw an exception, instead next() should return next text boundary or BreakIterator.DONE
ACTUAL -
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 268
at java.text.RuleBasedBreakIterator.lookupState(RuleBasedBreakIterator.java:1036)
at java.text.RuleBasedBreakIterator.handleNext(RuleBasedBreakIterator.java:931)
at java.text.RuleBasedBreakIterator.next(RuleBasedBreakIterator.java:621)
at test.main(test.java:8)


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.text.BreakIterator;
import java.util.Locale;

public class test {
  public static void main(String args[]) {
    BreakIterator bi = BreakIterator.getSentenceInstance(Locale.US);
    bi.setText("\udb40\udc53"); // U+E0053, TAG LATIN CAPITAL LETTER S
    bi.next();
  }
}

---------- END SOURCE ----------