Passing by value means we pass a copy of the value.; Passing by reference means we pass the real reference to the variable in memory.; Java object references are passed by value. All object ...

JEP 450 (Compact Object Headers) has been targeted for delivery in JDK 24, and has already been merged to main. This currently experimental feature optimizes heap utilization by shrinking the size ...

JVM heap analysis with Java Flight Recorder. Here’s how the Java Flight Recorder’s Old Object Sample event works. When a recording is started, a fixed number of objects from the Java heap are tracked.