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 6135

what is request processor?

Virtusa,

1 5570

how to use this key word in java programming?

7 11023

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

3 11554

how to use finalize()Method to resources

TCS,

4 7039

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

Mastek, TCS,

2 7587

can you program for reverse string?

IBM,

7 12328

what is run time polymorphism

4 6839

what Data encapsulation in java?

5 10500

what is polymorphism?

4 7996

What is Servlet?

8 8123

can any one tell me what is advantage of encapsulation

2 5790

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

3 5440

How do u provide security in java

3 6603

what is the use of abstract class?

Amdocs, Atos Origin, Invictus,

3 7699

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Un-Answered Questions { Core Java }

What is a stringbuffer?

971

Does it matter in what order catch statements for filenotfoundexception and ioexception are written?

955

What are different types of constants?

1049

In java, how many ways you can take input from the console?

997

How do you use parseint in java?

981

What is strings in java?

1042

What are the supported platforms by java programming language?

1045

Is arraylist sorted in java?

1002

Which eclipse is best for java?

999

What are the 8 primitive data types in java?

1019

Differentiate between vector and array list.

1066

What is the difference between abstraction and encapsulation?

1048

How is java hashmap implemented?

1031

What is the largest number a double can hold?

1045

Explain the difference between collection api and stream api in java8?

974

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