Static Keyword In Java | Static Data Member | Static Block | Java In Hindi/URDU-60

"static"-keyword(Modifier)
Can be applied-
-D.M
-M.F.
-Block(static block)
-Nested class

Can not be applied-
-class
-interface
-constructor

Syntex to call static D.M/M.F and Non-Static D.M/M.F:-

Non-Static:-

1)-object.Non-Static D.M/M.F;[same class and other class also]

e.g:-new A().x;


2)-objectRefrence.Non-Static D.M/M.F;(Standard aproach);[same class and other class also]

e.g:-A a=new A();
a.show();

3)-Non-Static D.M/M.F directly[but only in same class non static method and constructor]


Static:-

1)-object.Static D.M/M.F;[same class and other class also]

e.g:-new A().x;

2)-objectRefrence.Static D.M/M.F;[same class and other class also]

3)-ClassName.Static D.M/M.F(standard aproach)[same class and other class]

4)-Static D.M/M.F directly[but only in same class any where]


1)-static method represent the behaviour of class and non satic method represent the behaviour of object.

2)-standard aproach to call the static method is with name of class and the standard aproach to call the non static method with object refrence.

3)-method is either static or non static it always gets memory into method area(method table).



Difference between static D.M(Class) & Non-static(Instance D.M)
1)-static d.m represent class properties & non-static d.m represent object property.
2)-static d.m allocate memory only once in class memory area at class loading time and this is memory is shared my multiple objects.
It means a single copy is created in memory for each static d.m
In case of Non-Static D.M memory is allocated for each object seperatly in heap memory area at object creation time.
It means a seperate copy is created in memory for each non-static d.m

3)The standard approach to call the static d.m with class name &
The standard approach to call the non-static d.m with object reference

In this video you can learn about oops, why oops.? and what are the difference between object oriented, object based and pure object oriented programming langues.You can also understand the concept of Object and class In OOPS.

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