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

Core Java Interview Questions

Questions Answers Views Company eMail

How many times garbage collector will invoke an object?s finalize() method?

4 6153

How applets will communicate with each other?

1 3613

What method is used to compare two strings ?

4 8594

How to know the host from which Applet is originated?

Wipro,

1 2811

How to prevent a field from serialization ?

2 9166

How to add panel to a Frame?

5 13181

How can a class be accessed, If no access modifiers are declared?

4 6241

How to access a method that it declared as protected?

3 4986

How to access a variable if it is declared as private?

3 5955

How to re-get an object that is collected by garbage collector?

1 3420

What we have to do, when we don't want to implement all methods of an interface?

5 6939

How to display names of all components in a Container?

Microsoft, Wipro,

2521

Name the package that most of the AWT events that supports event-delegation model are defined?

2 5637

What are Inner classes?

4 5528

Is &&= a valid Java operator?

2 12341

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Un-Answered Questions { Core Java }

What is use of functional interface in java 8? Explain

594

What class allows you to read objects directly from a stream?

918

What are the two ways of implementing multi-threading in java?

874

What is difference between null and void?

567

How does java enable high performance?

732

what r advatages of websphere? & how to deploy?

1687

Tell me a few examples of final classes defined in Java API?

595

What does isempty () do in java?

642

How do you represent a space in regex java?

548

Is it possible to specify multiple jndi names when deploying an ejb?

586

How do you create a first line indent?

542

What is the static field modifier?

630

What is the diffrence between inner class and nested class?

601

When a byte datatype is used?

603

Why strings in java are called as immutable?

619

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