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 is the purpose of static methods and static variables?

1000

What are java packages?

977

What are the performance implications of interfaces over abstract classes?

1 3582

How can you generate random numbers in java?

988

When a lot of changes are required in data, which one should be a preference to be used? String or stringbuffer?

1192

How can an exception be thrown manually by a programmer?

928

How we can execute any code even before main method?

1076

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

959

Why strings in java are called as immutable?

948

What is the difference between an inner class and a sub-class?

943

Is it compulsory for a try block to be followed by a catch block in java for exception handling?

952

How can we use primitive data types as objects?

902

Can variables be used in java without initialization?

1023

What is an infinite loop?

2 1138

What is an infinite loop? How infinite loop is declared?

1020

Post New Core Java Questions

Un-Answered Questions { Core Java }

What is the dot operator?

943

Is static a singleton?

928

How do I type unicode?

910

What is string in java is it a data type?

952

who can i handle multiple client in RMI

1836

Explain jdk, jre and jvm?

915

Difference between ‘is-a’ and ‘has-a’ relationship in java?

947

Describe different states of a thread.

942

Is null a string in java?

1008

What are peerless components?

1031

What is java util?

975

What are advantages of using Java?s layout managers than windowing systems?

2318

Why do you canvas?

986

Define "Access specifiers" in java.

1125

Write a program to print fibonacci series up to count 10.

854

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