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 6137

what is request processor?

Virtusa,

1 5576

how to use this key word in java programming?

7 11033

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

3 11557

how to use finalize()Method to resources

TCS,

4 7046

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

Mastek, TCS,

2 7593

can you program for reverse string?

IBM,

7 12346

what is run time polymorphism

4 6847

what Data encapsulation in java?

5 10513

what is polymorphism?

4 8008

What is Servlet?

8 8136

can any one tell me what is advantage of encapsulation

2 5792

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

3 5444

How do u provide security in java

3 6612

what is the use of abstract class?

Amdocs, Atos Origin, Invictus,

3 7711

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Un-Answered Questions { Core Java }

What is a variable analysis?

1092

How many bytes are a float?

984

What are the differences between string, stringbuffer and stringbuilder?

1035

What is a nested class?

1126

Explain about fail fast iterators in java?

1063

Is char * a string?

995

What does this () mean in java?

984

What is meant by tab pans?

1251

What are the special characters?

972

Difference between method overloading and method overriding in java ?

1090

what do you understand by the term string with respect to java?

1041

How can we create a synchronized collection from given collection?

1085

How to Sort Strings which are given in List and display in ascending order without using java api.

4439

What does indexof return in java?

991

What is the use of arraylist in java?

1095

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