Java class loaders are a component of the Java virtual machine (JVM) and are responsible for loading Java classes into memory at runtime. When a Java program is executed, one or more class loaders ...

Use the totalMemory() and freeMemory() methods in the Java runtime class, which shows how much total heap memory is being controlled by the JVM, along with how much is not in use at a particular time.

GC.class_stats command requires -XX:+UnlockDiagnosticVMOptions -XX:+UnlockDiagnosticVMOption is not required in Java 9 for this diagnostic command. OutOfMemoryError: Native Memory ...