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

Core Java Interview Questions

Questions Answers Views Company eMail

Can we declare variables inside a method as Final Variables?

3 11079

Can you call a constructor within a constructor?

7 13754

Can you declare a static variable in a method?

7 15011

How the elements are organized in GridLayout?

2 4183

How are this and super used?

IBM,

7 9638

How are this() and super() used with constructors?

9 17199

Without creating a new object, How you can retrieve a String or other object?

1 4557

How GUI component handle its own events?

1 4442

How you can create a radio buttion using Checkbox class?

1 4159

Can an unreachable object become reachable again?

DELL,

3 20162

Can applet in different page/s communicate with each other?

1 3957

How to add and remove nodes in Jtree?

1 2525

What is deadlock and how to avoid this?

2 5488

How to avoid the runtime exception ?

2 8751

How the elements are organized in BorderLayout?

5 6374

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Un-Answered Questions { Core Java }

Can an arraylist be empty?

556

How do you use wildcards?

524

What is a java object and java application?

570

What is the difference between a static and a non-static inner class in java programming?

515

What is the difference between an if statement and a switch statement?

637

Write a function for palindrome and factorial and explain?

647

What is unmodifiable collection in java?

501

What is join () in java?

520

Why is java called the platform independent programming language?

568

What is the difference between I ++ and ++ I in java?

500

How will you print number in reverse (descending) order in BST.

570

How many bytes is string in java?

599

Can you extend main method in java?

610

Can we increase size of array?

560

When is an object subject to garbage collection?

567

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