Because Java uses automatic garbage collection, developers think Java programs are free from possible memory leaks. Although automatic garbage collection solves the main cause of memory leaks ...

You can fix your Java memory leak problem without a costly JVM heap dump. Just use Java Flight Recorder's Old Object Sample event and view the recording in JDK Mission Control.

The stated goal of this JEP is to enhance the G1 garbage collector to automatically return Java heap memory to the operating system when idle.