JDK-8150829 : Enhanced drop-args, identity and default constant, varargs adjustment
  • Type: Enhancement
  • Component: core-libs
  • Sub-Component: java.lang.invoke
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • CPU: generic
  • Submitted: 2016-02-29
  • Updated: 2017-05-17
  • Resolved: 2016-04-13
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JDK 9
9 b115Fixed
Related Reports
Blocks :  
JDK-8150964 - j.l.i.MethodHandles.whileLoop(...) small documentation issues
Blocks :  
JDK-8150956 - j.l.i.MethodHandles.whileLoop(...) and .iteratedLoop(...) throw unexpected exceptions in the case of 'init' return type is void
Blocks :  
JDK-8150824 - Exceptions when omitting trailing arguments in cleanup
Blocks :  
JDK-8151903 - MethodHandles.iteratedLoop(MH, MH, MH) doc issues
Relates :  
JDK-8130227 - JEP 274: Enhanced Method Handles
Description
Enhanced drop-args:
Adapts a target method handle to match the given parameter type list, if necessary, by adding dummy arguments.

Varargs adjustment:
Adapts a method handle as asVarargsCollector if flag is true else asFixedArity.

Identity and default constant:
Produces a method handle which does nothing and returns a suitable default depending on the return type.