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From "Daniel Golesny (JIRA)" <j...@apache.org>
Subject [jira] Created: (COLLECTIONS-321) ComparableComparator.getInstance() not compilable with jdk-compiler
Date Tue, 24 Feb 2009 11:12:02 GMT
ComparableComparator.getInstance() not compilable with jdk-compiler
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                 Key: COLLECTIONS-321
                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-321
             Project: Commons Collections
          Issue Type: Bug
          Components: Comparator
    Affects Versions: Generics
            Reporter: Daniel Golesny


Comparator<Integer> c = ComparableComparator.getInstance();

This line is valid with eclipse (3.4) compiler, but the jdk 1.5.0 compiler returns this error:
    [javac] J:\workspace\ndt\cobolclipse-TRUNK\collections_jdk5_branch\src\java\org\apache\commons\collections\comparators\ComparableComparatorTest.java:23:
incompatible types; no instance(s) of type variable(s) E exist so that org.apache.commons.collections.comparators.ComparableComparator<E>
conforms to java.util.Comparator<java.lang.Integer>
    [javac] found   : <E>org.apache.commons.collections.comparators.ComparableComparator<E>
    [javac] required: java.util.Comparator<java.lang.Integer>
    [javac] 		Comparator<Integer> c = ComparableComparator.getInstance();
    [javac]                                                                         ^
    [javac] 1 error


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