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 ?

772

Does constructor creates the object ?

794

What are the difference between composition and inheritance in java?

719

How is abstraction implemented in java ?

713

Can we use string in the switch case?

777

How hashset works internally in java?

773

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

711

What are untrusted applets?

823

Can you access non static variable in static context?

764

Why java does not support pointers?

766

What is the use of callablestatement?

764

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

778

How do you print array in java?

728

Why string objects are immutable in java?

794

What an i/o filter?

725

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Un-Answered Questions { Core Java }

What is the use of :: in java?

762

Write a program to calculate factorial in java?

764

What is instance synchronization?

800

What is the static keyword?

795

Can you sort a list in java?

722

What is a JAR file?

782

What happens if we override only equals?

749

What are JVM.JRE, J2EE, JNI?

875

What is e in java?

726

What are the steps involved to write rmi based programs?

765

What is use of set in java?

697

What is data and its types?

753

What are instance variables?

805

What does null mean in java?

828

What is the collections api?

767

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