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 abstraction in java?

Akamai Technologies,

1097

what is the significance of listiterator in java?

IBS,

1080

Can you instantiate the math class in Java?

IBS,

1099

what are the methods in object?

IBS,

1152

What is encapsulation in java?

IBS, NIIT,

1118

what is singleton class in java?

Cap Gemini,

1060

what is thread in Java ?

1167

Can You Have Virtual Functions In Java?

1156

What do you know about the garbage collector in java?

TCS,

1091

What types of index data structures can you have in java?

Tech Mahindra,

1239

What is the advantage of OOP in java?

1153

What is a copy constructor in java?

Amazon,

1131

what is function overloading in java?

Tavant Technologies, TCS, Virtusa,

1308

what is recursion in java

Cap Gemini,

1181

what is abstract class in Java?

Hexaware, Syntel,

1124

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Un-Answered Questions { Core Java }

What is difference between local variable and global variable?

1029

Can a method be overloaded based on different return type but same argument type?

973

What do you mean by default constructor in java?

1079

Tell us something about set interface.

1006

Difference between Linked list and Queue?

1032

What does jre stand for?

1066

What about member inner classes?

1100

What are the characteristics of Final,Finally and Finalize keywords.

1179

What are the major drawbacks of external iteration?

1067

Can static methods access instance variables in java?

1092

Can a method inside a interface be declared as final?

1008

Is java still relevant?

988

Why multiple inheritance is not supported by java?

988

Is null an object java?

998

What is passing by reference in java?

1030

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