This and Super Keyword::

this keyword:

1. What is this keyword in Java?

• this refers to the current object of the class.

• this refers to the instance variable of the current object.

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2.When do we use this keyword?

__To refer to the current instance variable

• If local variable and instance variable have the same name, this helps avoid confusion.

__To call the current class method

• Inside a class, we can use this to call another method of the same class.

__To call another constructor in the same class (Constructor Chaining)

• this() is used to call another constructor of the same class.

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3.How is this keyword used in Java?

• this.variable → access current object variable

• this.method() → call a method of same class

• this() → call another constructor in same class

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4.Why do we use this keyword?

• To avoid confusion between local variables and instance variables.

• To reuse constructors (constructor chaining).

• To make code cleaner and more readable.

• To refer to current object in methods, especially in OOP concepts
  like passing objects, builder patterns, etc.

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5.where we use this Keyword java?

• in constructors --- to call another constructor

• in instance method --- to access Variables/method of the same object.

• when passing the Current Object --- as a Parameter

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Super keyword:

1.what is Super keyword in Java?

• The Super keyword is refer to the Immediate Parent class object.

• allowing a Subclass to access its Parent's members.

• The Super keyword refers to Superclass (parent) object.

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2.when we use Super Keyword in java?

• Super Keyword is used to call Superclass method and to access the Superclass Constructor.

• when a child class overrides a method but you still need the parent
  class you use super keyword.

• when Parent and child class Variables have the same name we use Super.

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3.How it will be used?

• super.variable ---- access parent class variable.

• super.method() ---- call parent class method.

• super() ---- call parent class constructor (must be first statement).

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4.where we use super keyword in java?

__To access parent class variables

• used Inside a Child Class Construtor.

• must be the first statement in the Constructor.

__To access Parent Class Variables

• IF both Parrent and child have a Variable with the Same name we use super to access the Parent Version.

__ Tο access Parent class methods

→if a method is overridden in child Class,we can still call the parent's method using super.

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5.why we use super Keyword?

__To avoid Variable shadowing.

• If the child class has a Variable with the Same name as the Parent the child's variable hides the Parent's.

→using Super.VariableName, we can still access the parent's version.

__To call the Parent's method when overridden

• when the child overrides a method, Sometimes we still want to use the parent's method.

• super.methodName() lets us call the parent's implementation.

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