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A destructor is exactly the opposite... it gives the object a chance to grab any objects that need to be free'd prior to being freed itself. If care is not taken to "free" objects that have been used but are no longer required this is what is sometimes called a "memory leak". The memory allocated to that object is lost for use. It cannot be re-used for anything else because it is considered "still allocated" even though it is not in use. Generally, this type of program runs out of memory if it is something that runs for days without being restarted.
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Why java does not support destructor?
AMIT KUMAR3th Nov , 2014Java does not support destructors, since java supports the concept of garbage collection,hence the garbage collector is used to automatically free the space which has occupied by the program while running.Garbage collector calls the finalize() method which is defined in the object class. finalize() method is called once for each object.
What is the opposite of inventor?
destructor
What method in java performs some action (i.e. not assignments) other than returning a value?
Methods that are neither mutators (setters) or accessors (getters). This primarily includes the class constructors (the initialisers) and the class destructor (the restorer).
What is the difference between the constructor to and destructor?
Functions and Constructors are similar in many ways. They can have arguments, they can have any amount of code, they can access the class's variables etc. the only difference is that a method in java needs to mandatorily have a return type but a Constructor in java cannot have a return type. It always creates and returns an object of the class for which it is the constructor. You cannot return a value from a constructor explicitly and if you try to do that, the compiler will give an error. The system knows that the purpose of the constructor is to create an object of the class and it will do the same irrespective of whether you declare a return type or not.
Can you overload destructor for your class?
No. Classes can only have one destructor, whether you define one yourself or allow the compiler to generate one for you. The compiler-generated destructor is public by default, does not release any memory allocated to any class' member pointers, and is non-virtual, which are the three main reasons for defining your own.
