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

Core Java Interview Questions

Questions Answers Views Company eMail

Difference between Web-based applications,Client- Server applications and Distributed applications?

Infosys,

3 13474

Catch(Exception e){ } in that what is Exception and purpose of that in that place exactly?

3 4855

what is the diff between Servletcontext and servletconfig?

5 7036

how many access specifiers are available in java

11 22848

How many objects are created for a singleton class

Ness Technologies,

7 14637

How to sort the elements in HashMap

Ness Technologies,

3 11710

What is non static block in java

Emphasis, Ness Technologies,

10 23589

How to synchonise HashMap

IBM,

4 7756

Program to output as below formate: 1 2 3 4 5 6 7 8 9 10

Huawei,

4 7885

Program to find greatest prime number in n numbers?

Huawei,

3 15740

program to validate the IP address? Validity range should be 0 to 255

Huawei,

1 10572

question on Thread synchronization

Huawei,

3 10074

diff b/w sleep(1000) and wait(1000)?

Huawei,

4 20964

WHAT IS THE MEANING OF ALL TYPE OF BUZZWORDS?

4 14169

who can we create the object of a class? in how many ways we can create it (max 5)

2 5498

Post New Core Java Questions

Un-Answered Questions { Core Java }

How do you use equal in java?

1019

What is stack example?

970

How do you convert string to int in java?

1032

Explain parallel processing in java8?

1177

What package is math in java?

959

What is sorting in java?

943

List the three steps for creating an object for a class?

922

What is java oops?

1012

What will happen if a thrown exception is not handled?

969

How will you reverse a singly-link list?

958

Can we write any code after throw statement?

1019

Can a class extend 2 classes in java?

994

How listener identify that the event came from a particular object?

1963

Why arraylist is used in java?

1030

What is the protected method modifier?

1002

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