0 Memory Allocation in Java

Memory Allocation in Java

        All local variables are stored in a stack. local variables are de-allocated in a last in first out order as soon as the method terminates.
All dynamically allocated arrays and objects are stored in heap. They need not be de-allocated in any specific order. They can be garbage collected (removed from the memory) as and when their use is over.

Garbage Collection in Java
       An object that is not referred by any reference variable will be removed from the memory by the garbage collector. Garbage Collection is automatic.
If a reference variable is declared within a function, the reference is invalidated soon as the function call ends.
Programmer can explicitly set the reference variable to null to indicate that the referred object is no longer in use.