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Type: Bug
Resolution: Fixed
Priority: P3
Fix Version/s: 5.0
Affects Version/s: 5.0
Component/s: core-libs
Labels:

Subcomponent:
java.lang
Resolved In Build:
b42
CPU:

generic, x86
OS:

solaris_8, windows_xp

The latest boxing spec filed under CCC 4989021 requires an implementation
to cache boxed values in the range -128 to 127. The following test case
for this property fails, showing that we don't cache.

class CacheBox {
    public static void main(String[] args) {
        Integer i1 = 12;
        Integer i2 = 12;
        if (i1 != i2) throw new Error();
    }
}

duplicates

JDK-4993091 Performance improvements questionable with new static valueOf() methods

Closed

relates to

JDK-6628737 Specification of wrapper class valueOf static factories should require caching of boxing range

Resolved

JDK-8200478 For boxing conversion javac uses Long.valueOf which does not guarantee caching according to its javadoc

Closed

JDK-5005319 wrapper objects created in wrapper classes are not cached

Closed

JDK-5006128 Incorrect javadoc markup in Integer class description

Closed

JDK-7040854 Different Integer objects created for the same primitive int value

Closed

JDK-4931256 Boxed primitive types should cache common values

Closed

JDK-6352381 Allow primitives to be used as 'first-class' Objects

Closed

JDK-7190924 5.1.7: JLS does not mention caching of autoboxed longs

Closed

JDK-8252827 Caching Integer.toString just like Integer.valueOf

Closed

(5 relates to)

Assignee:: Joe Darcy

Reporter:: Neal Gafter (Inactive)

Votes:: 0 Vote for this issue

Watchers:: 0 Start watching this issue

Created:: 2004-02-06 10:56

Updated:: 2021-04-30 11:03

Resolved:: 2004-03-04 15:11

Imported:: 17/Sep/12 11:07 PM

Indexed:: 15/Aug/12 3:04 AM

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