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 are default methods ?

983

Does constructor creates the object ?

977

What are the difference between composition and inheritance in java?

958

How is abstraction implemented in java ?

919

Can we use string in the switch case?

984

How hashset works internally in java?

1013

What is the role of the java.rmi.naming class?

995

What are untrusted applets?

1071

Can you access non static variable in static context?

984

Why java does not support pointers?

977

What is the use of callablestatement?

961

What is the importance of hashcode() and equals() methods?

1000

How do you print array in java?

921

Why string objects are immutable in java?

994

What an i/o filter?

945

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Un-Answered Questions { Core Java }

Are arrays immutable in java?

1003

What is the purpose of a parameter?

1001

What is the difference between inner class and nested class?

1006

How do you declare a destructor in java?

928

How do you declare an empty string?

1007

What is an abstract method in java programming?

969

What access modifiers can be used for variables?

1071

Why char array is preferred over string for storing password?

1033

What is the definition of tree ?

963

What is default switch case? Give example.

951

When throws keyword is used?

946

What is oop principle in java?

1051

What are namespaces in java?

974

What is diamond operator in java?

896

How can you generate random numbers in java?

983

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