JDK-8251953 : Release Note: Added isEmpty Default Method to CharSequence
  • Type: Sub-task
  • Component: core-libs
  • Sub-Component: java.lang
  • Affected Version: 15
  • Priority: P4
  • Status: Closed
  • Resolution: Delivered
  • Submitted: 2020-08-18
  • Updated: 2021-05-14
  • Resolved: 2020-08-18
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JDK 15
15Resolved
Description
`java.lang.CharSequence` has been updated in this release to define a default `isEmpty` method that tests if a character sequence is empty.  Testing for, and filtering out, empty `String`s and other `CharSequence`s is a common occurrence in code and `CharSequence::isEmpty` can be used as a method reference.  Classes that implement `java.lang.CharSequence` and another interface that defines `isEmpty` method should be aware of this addition as they may need to be modified to override the `isEmpty` method.