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 does jenkins do?

874

Explain Linked HashSet

1 1521

List methods available in Java Queue interface

1 1384

Explain Big-O notation with an example

1 1398

10. What is the output of the following Java program? class Main { public static void main(String args[]){ final int i; i = 10; System.out.println(i); } } 10. What is the output of the following Java program? class Main { public static void main(String args[]){ final int i; i = 10; System.out.println(i); } }

948

What is the output of the following Java program? class Main { public static void main(String args[]){ final int i; i = 10; System.out.println(i); } } 10. What is the output of the following Java program? class Main { public static void main(String args[]){ final int i; i = 10; System.out.println(i); } }

1 1449

Why are strings immutable in Java?

1 1468

How to convert string to int in java?

1 1395

How to use scanner in java?

1 1620

How does a cookie work in Servlets?

795

What the difference is between execute, execute Query, execute Update?

778

Is Java Platform Independent if then how?

5 1160

What will happen if we declare don’t declare the main as static?

5 1277

How many types of packages are there in Java?

5 1298

Explain different data types in Java.

5 1230

Post New Core Java Questions

Un-Answered Questions { Core Java }

What is difference between equals and hashcode method?

1058

Can we declare register variable as global?

902

when you will synchronize a piece of your code? : Java thread

969

What is the difference between a window and a frame in java programming?

1087

What is the difference between class & structure?

1133

What is passing value java?

1006

What is null mean in java?

1037

Can a static class have a constructor?

975

What are controls and their different types in awt?

1029

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

952

What is general methodology?

989

How garbage collection is done in java?

1000

What is the purpose of object oriented programming?

927

what is difference between equals and ==?

1003

Is java se free?

895

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