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 the purpose of the wait(), notify(), and notifyall() methods in java programming?

1082

What restrictions are placed on method overriding in java programming?

1014

What is the purpose of the enableevents() method in java programming?

1192

What is the difference between static and non-static variables in java programming?

988

What is a native method in java programming?

1078

How can a gui component handle its own events in java programming?

1050

What happens when a thread cannot acquire a lock on an object in java programming?

1029

Is java a super set of javascript?

1109

What is the difference between the boolean & operator and the && operator in java programming?

1056

Can a lock be acquired on a class in java programming?

998

What do heavy weight components mean in java programming?

957

Name component subclasses that support painting in java programming?

1080

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

1082

Name container classes in java programming?

1114

What is the vector class in java programming?

1092

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Un-Answered Questions { Core Java }

Explain how can you debug the Java code?

1080

Explain importance of throws keyword in java?

986

Why packages are used?

1573

Is Java a dying language?

1092

What happens to a static var that is defined within a method of a class?

1035

How can we access some class in another class in java?

999

Considering notepad/ie or any other thing as process, what will happen if you start notepad or ie 3 times? Where 3 processes are started or 3 threads are started?

1158

What exceptions occur during serialization?

1098

Are arrays passed by reference in java?

920

What is unicode datatype?

972

Can interface be private in java?

1032

Is static variable stored in heap?

1011

What is mnemonic code?

1026

What is an empty string in css?

1062

Is array passed by reference in java?

1035

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