Method and variable handles vs. Java reflection. To truly understand MethodHandles and VarHandles—what they do and why they are useful—it’s helpful to know a few things about reflection in Java.

Its survey of 2,000 developers for its JVM 2020 report finds that while 87% of JVM developers still use Oracle Java, the population that use Kotlin has jumped about 130%, from a 2.4% share last ...