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From "Richard Liang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-985) [classlib][luni] bug-to-bug compatibility java.util.Formatter.Formatter(Appendable a)
Date Wed, 26 Jul 2006 10:41:13 GMT
[classlib][luni] bug-to-bug compatibility java.util.Formatter.Formatter(Appendable a)
-------------------------------------------------------------------------------------

                 Key: HARMONY-985
                 URL: http://issues.apache.org/jira/browse/HARMONY-985
             Project: Harmony
          Issue Type: Bug
          Components: Non-bug differences from RI
            Reporter: Richard Liang


For the constructor java.util.Formatter.Formatter(Appendable a):

If we pass a null to j.u.Formatter.Formatter(Appendable a), when we try to get the destination
of the formatter's output by calling formatter.out(), RI will thrown a java.util.FormatterClosedException.
But according to the specification,  the destination should be a StringBuilder. 

Harmony complies with  the specification, but RI breaks the specification.

References:
1) Specification:
public Formatter(Appendable a)
   Constructs a new formatter with the specified destination.
   The locale used is the default locale for this instance of the Java virtual machine.
   Parameters:
       a - Destination for the formatted output. If a is null then a StringBuilder will be
created.
2) The following test passes on Harmony, but fails on RI.
   public void test_ConstructorLjava_lang_Appendable() {
       Formatter formatter = new Formatter((Appendable) null);
       Appendable out = formatter.out();
       assertTrue(out instanceof StringBuilder);
   } 
3) Discussion in harmony-dev: http://www.mail-archive.com/harmony-dev@incubator.apache.org/msg09376.html

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