Summary

Creating a VarHandle for a static field no longer triggers class initialization.

Problem

Previously, the static field declaring class initialization was done at VarHandle creation time which does not conform the specification that the class should only be initialized when the static field is accessed and the class has not been initialized.

Solution

Make MethodHandles::findStaticVarHandle return a lazily-initialized VarHandle that conform to the specifications; it only initializes the declaring class on operations that must require class initialization.

Specification

No change.

In the API specification of MethodHandles::findStaticVarHandle:

If the returned VarHandle is operated on, the declaring class will be
initialized, if it has not already been initialized.

This new implementation conforms to the specification and also is performant than the old eager-initializing implementation.