RFR: JDK-8274685 - Documentation suggests there are ArbitrarilyJumpableGenerator when none

[Jim Laskey]

"There is also an interface RandomGenerator.ArbitrarilyJumpableGenerator for algorithms that allow jumping along the state cycle by any user-specified distance. In this package, implementations of these interfaces include "Xoroshiro128PlusPlus", and "Xoshiro256PlusPlus" is incorrect. "Xoroshiro128PlusPlus", and "Xoshiro256PlusPlus" are actually RandomGenerator.JumpableGenerator.

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Commit messages:
 - 8274685: Documentation suggests there are ArbitrarilyJumpableGenerator when none

Changes: https://git.openjdk.java.net/jdk/pull/6349/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6349&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8274685
  Stats: 18 lines in 1 file changed: 7 ins; 2 del; 9 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6349.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6349/head:pull/6349

PR: https://git.openjdk.java.net/jdk/pull/6349