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  1. JDK
  2. JDK-8033590

java.util.Comparator::thenComparing has unnecessary type restriction

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        FULL PRODUCT VERSION :


        A DESCRIPTION OF THE PROBLEM :
        The following method of java.util.Comparator requires that type U extend java.lang.Comparable.

          <U extends Comparable<? super U>> Comparator<T> thenComparing(
            Function<? super T, ? extends U> keyExtractor,
            Comparator<? super U> keyComparator);

        But this restriction is unnecessary because keyComparator is used to compare extracted key objects.



        REPRODUCIBILITY :
        This bug can be reproduced always.

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            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8034007 java.util.Comparator::thenComparing has unnecessary type restriction

            • P1 - Blocks development and/or testing work, production could not run.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8034566 java.util.Comparator::thenComparing has unnecessary type restriction

            • P1 - Blocks development and/or testing work, production could not run.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8033982 java.util.Comparator::thenComparing has unnecessary type restriction

            • P1 - Blocks development and/or testing work, production could not run.
            • Closed

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8034001 java.util.Comparator::thenComparing has unnecessary type restriction

            • P1 - Blocks development and/or testing work, production could not run.
            • Closed

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8035238 java.util.Comparator::thenComparing has unnecessary type restriction

            • P1 - Blocks development and/or testing work, production could not run.
            • Closed

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                  Updated:
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