Most Java developers who come from a C/C++ background have probably at one time wished for a Java equivalent of sizeof(). Although Java lacks a true sizeof() equivalent, the Instrumentation interface ...

A class like Person.java is often a data class that will need to be used in comparisons and possibly hashCode-based collection keys. It is important to create equals (Object) and hashCode () ...

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 quickly ...