Answer Posted / suresh

oops concepts are mainly 3
1.encapsulation
2.inheritance
3.polymorphism

1 :- encapsulation refers to binding the data in a single
class the data present inside the encapsulation is secured.

abstraction comes under encapsulaton.

real time example:-if you get fever you will take the
medicine to cure.the medicine is the capsule in which the
powder is present.the powder is a mixture of several
chemicals as in the same way all the classes are mixed and
only the output(object) you will see as if a capsule.

2 :- inheritance is nothing but extending the class from
parent to the child

real time example:- the prime minister of india
(late)mr.jawaharlal nehru and his daughter indira gandhi
and her son rajiv gandhi and his wife sonia gandhi.

3 :- polymorphism refers to which it does many things

real time example:- consider the electric power which does
many things .

What are local variables?

999

---

What are the advantages of passing this into a method instead of the current class object itself?

1617

---

What is early binding and late binding in java?

1099

---

What does isempty () do in java?

1000

---

What is a marker interface?

1087

---

Differentiate between postfix and prefix operators in java.

1078

---

Explain the difference between map and flatmap stream operation?

1197

---

If I only change the return type, does the method become overloaded?

874

---

What are the types of relation?

993

---

Given a singly linked list, find the middle of the list in a single traversal without using temporary variable.

996

---

Why is java so important?

1064

---

What are the steps involved to write rmi based programs?

950

---

Give me example of derived data types.

1086

---

Can I override protected method in java?

1018

---

What is data string?

882

---