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  1. JDK
  2. JDK-8067471

Use private static final char[0] for empty Strings

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Details

    • Enhancement
    • Resolution: Fixed
    • P5
    • 9
    • None
    • core-libs
    • b47
    • generic
    • generic

    Backports

      Description

        In an average heap dump, 292 kB is wasted from empty Strings having their own char[] of length 0. Instead, the String class should declare a zero-length char[] and use that for empty Strings. The constructor should detect that an empty String is being created and use the common char[].

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            backported by

            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-8071586 Use private static final char[0] for empty Strings

            • P5 - Cosmetic problem like misspelt words or misaligned text.
            • 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-8076731 Use private static final char[0] for empty Strings

            • P5 - Cosmetic problem like misspelt words or misaligned text.
            • 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-8084135 Use private static final char[0] for empty Strings

            • P5 - Cosmetic problem like misspelt words or misaligned text.
            • 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-8086779 Use private static final char[0] for empty Strings

            • P5 - Cosmetic problem like misspelt words or misaligned text.
            • 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-8138142 Use private static final char[0] for empty Strings

            • P5 - Cosmetic problem like misspelt words or misaligned text.
            • Resolved
            relates to

            Enhancement - null JDK-8071571 Move substring of same string to slow path

            • P5 - Cosmetic problem like misspelt words or misaligned text.
            • Resolved

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                lpriima Lev Priima
                nreynold Nathan Reynolds
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                  Created:
                  Updated:
                  Resolved: