Class and Object: Spaciman blank form is class and filled form by taking its photocopy by multiple students is object
Inheritance: You can use your mobile and your father's mobile also but your father can not use your mobile.
Method OverRiding: Parent and Child class having the function with the same name.
Parent Child relationship + Riding
Method OverLoading :
Example 1 : You and your son are going to start dinner. You asked for spoon. knowing that you want to serve rice from kadhai to plate son will give you a big spoon. if you are going to start eating from your plate he will give you small spoon.
Example 2 : In the same class there are draw( a,b) , draw(a,b,c) , draw( a,b,c,d) . First funcion will draw a line, second will draw a triangle and the third will draw a rectangle.
static block: is like a bulb inside the fridge which gets switch on automatically just before you open the fridge door. When the class is loaded static block gets executed at first
Encapsulation: public setter and getter methods and private variables in one capsule
Constructor: Whenever the doorbell rings, the door gets opened by someone. Whenever an object is created constructor gets executed
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