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 12445

Can you call a constructor within a constructor?

7 15437

Can you declare a static variable in a method?

7 17025

How the elements are organized in GridLayout?

2 5031

How are this and super used?

IBM,

7 12098

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

9 19447

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

1 5211

How GUI component handle its own events?

1 5226

How you can create a radio buttion using Checkbox class?

1 4886

Can an unreachable object become reachable again?

DELL,

3 22189

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

1 4545

How to add and remove nodes in Jtree?

1 3247

What is deadlock and how to avoid this?

2 6481

How to avoid the runtime exception ?

2 10046

How the elements are organized in BorderLayout?

5 8520

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Un-Answered Questions { Core Java }

How many classes can any class inherit java?

933

What's the base class in java from which all classes are derived?

1215

Explain super keyword in java.

1001

How does multithreading take place on a computer with a single cpu in java programming?

961

What is namespace in java?

951

can java object be locked down for exclusive use by a given thread? : Java thread

1039

Which are the two subclasses under exception class?

1012

What is <> used for in java?

1081

What are the special characters?

935

What is operator overloading. Is it is supported in java?

966

What is immutable in java?

1016

When will we use them?

987

What is the Scope of Static Variable?

1171

Which of the following classes will have more memory allocated?

978

Can we override the overloaded method?

1065

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