[COLLECTIONS-321] ComparableComparator.getInstance() not compilable with jdk-compiler

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0-alpha1, 4.0
• Component/s: Comparator
• Assignee: Unassigned
• Reporter: Daniel Golesny
• Created: 24/Feb/09 14:10
• Updated: 09/Nov/14 17:31
• Resolved: 01/Mar/13 00:24

Description

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