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Core Java 01 - Encapsulation We will start with OOPS concept, taking Encapsulation first in this tutorial! (Don't worry about practical implementation for now, we will take it in further...

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Interfaces can have static and default methods now! And also enjoy the new useful concept, introduced in JAVA 8 - "LAMBDAS" ...I personally feel bad reading it because it's not object oriented...but truly useful!! Enjoy...

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Can you initialize an instance data member before the run of constructor while creating an object? :O Post your answers below in the comment section...

Why main() function is static?
Comment!!

Are constructors used to create an object?
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Why constructors can't return any value although they are also just a function?

Comment your answers!!

Difference between malloc and calloc?

There are two differences between these functions:-
-->First, malloc() takes a single argument (the amount of memory to allocate in bytes), while calloc() needs two arguments (the number of variables to allocate in memory, and the size in bytes of a single variable).
-->Secondly, malloc() does not initialize the memory allocated, while calloc() initializes all bytes of the allocated memory block to zero.

Function Description
malloc -- allocates the specified number of bytes
realloc -- increases or decreases the size of the specified block of memory. Reallocates it if needed
calloc -- allocates the specified number of bytes and initializes them to zero
free --- releases the specified block of memory back to the system

Is object just a buffer in a memory area?
Comment your answers!!

ENCAPSULATION

What is Encapsulation?
An analogy can be made here with the notion of a CAPSULE, which not only encloses its contents, but also protects it from the exterior environment!!

-->To group together properties and behaviors of a class type...
-->To reduce the collisions of the same named variables...
-->Reduces system complexity...
-->Security enhancement due to restricted access to outside class...
-->Increases robustness...