Answer Posted / manoj donga

OOP is Nothing but Object Oriented Programming.
In OOPs concept is implimented in our real life systems.
OOPs have following features
1. Object - Instance of class
2. Class - Blue print of Object
3. encapsulation - Protecting our data
4. polymorphism - Different behaviors at diff. instances
5. abstraction - Hidding our irrelavance data
6. inheritence - one property of object is aquring to
another property of object

Simple Ex.

Please assume u standing near a car. How to impliments our
OOPs concept for this scenario ?

Simple,
car is a object b'coz it having more functions.
car is a class b'coz it contain more parts and features
inside.
car is a Encapsulation B'coz it protected some unwanted
parts or functions to user
car is a Polymorphism b'coz it have different speed as
display in same speedometer
car is a Abstraction b'coz it hidding more parts by coverig
such as engine,disel tank
car is a Inheritance b'coz one car is a property of more
people. i mean your car is driving bu you, your friend and
your relatives.

How do you sort arrays in java?

916

---

Why do we need hashmap in java?

1103

---

How many arguments can a method have java?

1014

---

Can we use catch statement for checked exceptions?

955

---

What is object-oriented programming?

1090

---

What is the history of java?

983

---

What is the static method?

1066

---

What does java final mean?

1023

---

What is string variable?

1045

---

What does escaping a character mean?

1004

---

What do you understand by abstract classes?

1062

---

Does list allow duplicates in java?

925

---

What are reference variables in java?

1111

---

When wait(), notify(), notifyall() methods are called does it releases the lock or holds the acquired lock?

997

---

What is difference between pointer and reference?

1057

---