You might know that Java passes by value, but it helps to understand why. Here's what happens when you pass mutable and immutable object references in Java.

Java provides a way for the programmer to exercise control over memory management by marking certain objects as expendable via reference objects. Should an application’s memory requirements ...

Copying objects is a common Java programming operation that has one serious trap. Here's how to avoid copying from an object reference and only copy the instance and values you want.