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Core Java Interview Questions
Questions Answers Views Company eMail

What does jenkins do?

967

Explain Linked HashSet

1 1675

List methods available in Java Queue interface

1 1535

Explain Big-O notation with an example

1 1557

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); } }

1036

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 1600

Why are strings immutable in Java?

1 1620

How to convert string to int in java?

1 1547

How to use scanner in java?

1 1866

How does a cookie work in Servlets?

896

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

883

Is Java Platform Independent if then how?

5 1522

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

5 1611

How many types of packages are there in Java?

5 1604

Explain different data types in Java.

5 1664


Post New Core Java Questions

Un-Answered Questions { Core Java }

What are unchecked exceptions in java?

1081


If a method is declared as protected, where may the method be accessed?

1066


Why java does not support pointers?

1085


What do you understand by access specifiers in Java?

1051


What is the exception hierarchy in java?

1020


Why is it important to initialize a variable?

1041


How do you check if a character in a string is a digit or letter?

1123


What is the purpose of void?

1034


Can this keyword be used to refer static members?

1072


Can we create object of static class?

1069


What is an object class?

1073


What happens if we don’t define serial version uid?

1078


How is it possible in java programming for two string objects with identical values not to be equal under the == operator?

1055


Can we serialize static variables in java?

1143


Why do we need hashset in java?

1092