What are the differences between JVM, JRE and JDK? The main differences between JVM, JRE and JDK are listed below, JVM: Java Virtual Machine(JVM) is an abstract machine that provides a runtime ...
java.util.Collections.synchronizedMap: Use when all states are captured in a map, and contention is not expected but you still want to make code safe. In case of no contention, the JVM JIT compiler is ...