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

Core Java Interview Questions

Questions Answers Views Company eMail

Can a class extend abstract class or interface? why

Wipro,

4 9668

What is the difference between Access Modifier and Access specifier?

1 7159

Is it possible to write method inside method

L&T,

4 11988

what is the default value of a variable char?(If not assigned)

4 7393

Write a java program to get a string of words and print the numbers of each word count in descending order

Logica CMG, Subex,

11 30800

Where can I find data structures question and answers with comprehensive working code written in Java

Amazon,

2424

if the memory capacity is 700 presently occupied by process is 690. then another process request space(40) how this situation handled in java.

Wipro,

4 6997

what is the logic inside any default constuctor?

2 4419

How TreeMap sorts the objects inside it?? suppose if have include one employee object and one car object. On what basis it will sort?

5 14657

Java is based on pass by reference or pass by value ..

L&T, Wipro,

6 10938

difference between arraylist and linkedlist otherthan performance

L&T,

2 10686

why pointer is not used in java?

3 11751

what are the difference between Java and .Net?

5 8540

can any body body expalin best definitions & best real time exaples for opps concepts.

Accel,

2273

What is map and hashmap? also tell the difference.

1 4331

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Un-Answered Questions { Core Java }

Can we call a non-static method from inside a static method?

998

What is Java Reflection API? Why it’s so important to have?

1166

What is object in java?

991

What is variable and rules of variable?

1024

What is the purpose of using the java bean?

1054

Is string is a data type in java?

1074

Explain implementation and how is it different from conversion?

1086

State some advantages of java?

1244

What are different types of constants?

1052

What is meant by final class?

1121

What is the dot operator?

1003

Is java a software?

959

Which is easier netbeans or eclipse?

1061

Is space a character in java?

1014

What is an infinite loop?

1257

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