Static keyword how does an os handle it

Consider the following java program, that illustrate the use of static keyword with variables and methods. Such type of classes are called Nested static classes.

For static nested class, see static nested class in java This article is contributed by Gaurav Miglani. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute. See your article appearing on the GeeksforGeeks main page and help other Geeks. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above.

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These are:. JavaScript Tutorials jQuery Tutorials. Java static and this Keyword. In this chapter we will learn about the two special types of keywords:.

Table of Contents. What is static in Java? Static keyword is unacceptable to the following. Program for Static in Java. Rules for using Static Variables. You must be thinking, why was the destructor not called upon the end of the scope of if condition, where the reference of object obj should get destroyed.

This is because object was static , which has scope till the program's lifetime, hence destructor for this object was called when main function exits. Static data members of class are those members which are shared by all the objects.

Static data member has a single piece of storage, and is not available as separate copy with each object, like other non-static data members. Static member variables data members are not initialied using constructor, because these are not dependent on object initialization. Also, it must be initialized explicitly, always outside the class. If not initialized, Linker will give error. Once the definition for static data member is made, user cannot redefine it.

Though, arithmetic operations can be performed on it. It can be called using an object and the direct member access. But, its more typical to call a static member function by itself, using class name and scope resolution :: operator.

These functions cannot access ordinary data members and member functions, but only static data members and static member functions. It doesn't have any "this" keyword which is the reason it cannot access ordinary members.

We will study about "this" keyword later.