Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

what is filters and its use?

Virtusa,

2 6236

what is request processor?

Virtusa,

1 5673

how to use this key word in java programming?

7 11274

what is the use of finalize()Method please explain with an example

3 11734

how to use finalize()Method to resources

TCS,

4 7198

What is Exception handling in Java How do you handle run time errors please explain with an example

Mastek, TCS,

2 7683

can you program for reverse string?

IBM,

7 12557

what is run time polymorphism

4 7011

what Data encapsulation in java?

5 10692

what is polymorphism?

4 8155

What is Servlet?

8 8387

can any one tell me what is advantage of encapsulation

2 5926

can any one tell me when do u go for inheritance and polymorphism

3 5596

How do u provide security in java

3 6749

what is the use of abstract class?

Amdocs, Atos Origin, Invictus,

3 7877

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Un-Answered Questions { Core Java }

What is thread pool? How can we create thread pool in java?

1159

Can a constructor call the constructor of parent class?

1094

Can we declare the main method of our class as private?

1061

What are the super most classes for all the streams?

2735

What is variable and rules of variable?

1081

What are the four versions of java?

1079

What is finally and finalize in java?

1162

What causes memory leaks in java?

991

What is vector capacity in java?

1159

What do bitwise operators do?

1060

What are the advantages of java inner classes?

1125

What do you understand by copy constructor in java?

989

What does exclamation mean in java?

1193

Why main function is static?

1335

What are java annotations?

1246

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