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 JPA in Java.

1 817

Briefly explain the term Spring Framework

1 792

Difference between static methods, static variables, and static classes in Java.

1 919

What is a Java Virtual Machine?

1 778

. Define Copy Constructor in Java

1 809

Can Java be said to be the complete object-oriented programming language

1 808

Define Wrapper Classes in Java.

1 745

Define package in Java.

1 775

. Differentiate between instance and local variables.

1 857

. Explain Java String Pool.

1 799

What happens when the main() isn't declared as static?

1 796

Why is Java a platform independent language?

1 879

Why is the main method static in Java?

1 882

What part of memory - Stack or Heap - is cleaned in the garbage collection process?

1 791

What is the difference between the program and the process?

1 887

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Un-Answered Questions { Core Java }

Is java a utf 8 string?

971

What is the difference between preemptive scheduling and time slicing in java programming?

1006

What about interthread communication and how it takes place in java?

1051

How do you override a method?

1015

What is java beans?

982

What is a JAR file?

1037

Can we define constructor in inner class?

994

What is linkedlist in java?

996

How many bytes is a string?

1129

What will happen if static modifier is removed from the signature of the main method?

955

Explain what is Marker interface?

1083

What are the object and class classes used for?

1036

What is jdbc api?

998

When can we say that threads are not lightweight process in java?

1155

What is %d in printf?

1037

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