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

Core Java Interview Questions

Questions Answers Views Company eMail

In method overloading ,if i change the return type to Long instead of INT,is the program execute

HCL,

6 12003

wat is class level lock and object level lock

HCL, Persistent,

3 22361

is it possible to add a object in a HASHMAP

HCL,

6 9957

why we cannot declare static variable inside a static method

4 9956

why using interface interface ?

2113

why use interface? if interface declear a method implement in class. why direct implement method in class

HCL,

1 2881

different between exception and error? explaim check and uncheck exception

4 7591

Difference between interface and abstract class with ex.

Cognizant, Tech Mahindra,

4 9789

what is Thread priority?

Tech Mahindra, Wipro,

4 8275

Distinguish method overloading and overriding

Tech Mahindra,

2 5830

Distinguish method overloading and method overriding

Tech Mahindra,

4 7578

What is thread priority?

Tech Mahindra,

1 5849

Why Over riding is Run Time Polymorphism?

Genpact,

3 16166

How many objects are created when we create String class object using new operator?

Mind Tree,

9 27896

What is onClassLoader in java?

Cap Gemini,

5 10081

Post New Core Java Questions

Un-Answered Questions { Core Java }

How long will it take to learn java?

1038

What are the two environment variables that must be set in order to run any java programs?

1024

How many bits are used to represent unicode, ascii, utf-16, and utf-8 characters in java programming?

1068

What is the difference between form & report?

1092

What languages are pass by reference?

1111

What is the purpose of the System class?

1043

Why convert an applet to an application?

1166

What does those terms actually mean included in the j.d.k i.6?

2176

How concurrent hashmap works?

1248

What are the advantages of autoboxing?

1071

What are the differences between getting and load method?

1300

Explain inner classes ?

1179

Are arrays static in java?

1113

Is it possible to override private or static method in java?

1041

What is literal example?

1017

For More Un-Answered { Core Java } Questions Click Here