In my previous article, I described how to use Java’s reference objects, SoftReferenceand WeakReference, to build weak references and mark blocks as reclaimable in a simple application.

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.

Java's default constructor allows developers to create instances of classes when no other constructors are explicitly defined. The default constructor in Java takes no arguments -- it simply ...