Core Java Interview Questions
Questions Answers Views Company eMail

what is filters and its use?

Virtusa,

2 5143

what is request processor?

Virtusa,

1 4850

how to use this key word in java programming?

7 8927

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

3 10231

how to use finalize()Method to resources

TCS,

4 5619

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

Mastek, TCS,

2 6498

can you program for reverse string?

IBM,

7 10305

what is run time polymorphism

4 5438

what Data encapsulation in java?

5 8762

what is polymorphism?

4 6105

What is Servlet?

8 5854

can any one tell me what is advantage of encapsulation

2 4721

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

3 4207

How do u provide security in java

3 5392

what is the use of abstract class?

Amdocs, Atos Origin, Invictus,

3 6326


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Un-Answered Questions { Core Java }

Difference between ‘is-a’ and ‘has-a’ relationship in java?

527


What is the difference between hashmap and hashtable in java?

545


What is java virtual machine? Explain

554


What are predefined functions?

550


Differences between traditional programming language and object oriented programming language?

560






What are the differences between heap and stack memory?

535


How do you check if two given string are anagrams?

541


How to use arraylist in java netbeans?

494


How do you add an element to a set in java?

489


Write a function to print Fibonacci series and Tribonacci series?

740


How transient variable is different from volatile variable?

546


What is the purpose of using the java bean?

551


what are the disadvantages of indexes in oracle?

1850


Is a method a function?

529


Why string is a class?

534