Java focuses greatly on using automatic memory allocation systems, which means that it employs an automatic garbage collector. The GC in Java recovers the memory after the runtime evaluates that certain objects are no longer in computational use. It uses a method of reference, such as the one that may be employed in a manual scheme.
Once all the references to an object are eliminated, the memory location is marked for automatic freeing by the garbage collector. A memory leak occurs when inefficient code by a programmer references an object that is actually not required. A null pointer exception method is usually employed in Java for identifying non-existent objects.
The main idea behind the use of different GC methods in Java is to take away the burden of memory management from the programmers. In some languages, objects are allocated from heaps and deallocated from...
