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

Core Java Interview Questions

Questions Answers Views Company eMail

Explain Public static void main?

IBM, Vetech,

2 19942

What is file class and what is its purpose?

1 4252

what is Remote Reference Layer ?

1 5426

What is static binding and where it occurs?

4 10098

Can a Byte object be cast to a double value?

KO,

3 16219

Can a double value be cast to a byte?

3 11215

Can a for statement loop indefinitely?

3 9999

what is the form of storage space in java?

5 9243

What are the latest versions in JAVA related areas?

Netcraft,

3 8181

What is the minimum and maximum length of an identifier?

TCS,

6 17025

What class is used to implement a Throwable array?

3 7473

What is the default initialized value of String type variable?

4 7536

What is the default initialized value of a boolean type variable?

3 5712

When garbage collector invokes object?s finalize() method?

5 8095

How Applets & Servlets will communicate with each other?

2 7566

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Un-Answered Questions { Core Java }

Why should we use singleton pattern instead of static class?

932

Can a final variable be null?

1021

Why are functions called methods in java?

1008

What is the type of lambda expression?

1025

What are parsing rules?

994

Explain about strings in java?

1076

What is java objectoutputstream?

991

how is final different from finally and finalize in java?

1058

What is difference between Heap and Stack Memory?

1054

Is 0 an irrational number?

1070

How to stop a thread in java? Explain about sleep () method in a thread?

1015

When should I use singleton?

1041

Why inputstreamreader is used in java?

1025

What is a java lambda expression?

1050

What does string intern() method do?

1088

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