[HARMONY-985] [classlib][luni] bug-to-bug compatibility java.util.Formatter.Formatter(Appendable a)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Component/s: Non-bug differences from RI
• Assignee: Unassigned
• Reporter: Richard Liang
• Created: 26/Jul/06 10:39
• Updated: 18/Sep/06 02:34
• Resolved: 18/Sep/06 02:34

Description

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/[e-mail]/msg09376.html