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Autoboxing automatically wraps a value of a primitive type with the corresponding wrapper object. The _Java Language Specification_ (JLS) [§5.1.7, "Boxing Conversion,"|http://java.sun.com/docs/books/jls/third_edition/html/conversions.html#5.1.7] \[[JLS 2005|AA. Bibliography#JLSReferences#JLS 05]\], explains which primitive values are memoized during autoboxing: |
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This noncompliant code example defines a {{Comparator}} with a {{compare()}} method \[[Bloch 2009|AA. Bibliography#BlochReferences#Bloch 09]\]. The {{compare()}} method accepts two boxed primitives as arguments. The {{==}} operator is used to compare the two boxed primitives. In this context, however, it compares the _references_ to the wrapper objects rather than comparing the _values_ held in those objects. |
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<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="c301726d00dd226c-b9a6d471-4ee94bc5-85069ba8-7c7b45e39455c19cb33dcf92"><ac:plain-text-body><![CDATA[ | [[JLS 2005 | AA. Bibliography#JLS References#JLS 05]] | [§5.1.7, Boxing Conversion | http://java.sun.com/docs/books/jls/third_edition/html/conversions.html#5.1.7] | ]]></ac:plain-text-body></ac:structured-macro> |
<ac:structured-macro ac:name="unmigrated-wiki-markup" ac:schema-version="1" ac:macro-id="df74cfe8838f24e3-a3e3c7cb-40af4efe-a87ca852-147f1948bce0680084d9a6c6"><ac:plain-text-body><![CDATA[ | [[Pugh 2009 | AA. Bibliography#Pugh References#Pugh 09]] | Using == to Compare Objects Rather than | ]]></ac:plain-text-body></ac:structured-macro> |
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