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.

1 743

Briefly explain the term Spring Framework

1 720

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

1 831

What is a Java Virtual Machine?

1 719

. Define Copy Constructor in Java

1 747

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

1 729

Define Wrapper Classes in Java.

1 676

Define package in Java.

1 704

. Differentiate between instance and local variables.

1 785

. Explain Java String Pool.

1 726

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

1 725

Why is Java a platform independent language?

1 811

Why is the main method static in Java?

1 808

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

1 729

What is the difference between the program and the process?

1 821

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Un-Answered Questions { Core Java }

What is the difference between the paint() and repaint() methods?

1017

What makes a function well defined?

946

How do you find the absolute value?

1003

What is bitwise complement?

936

What is the difference between processes and threads?

997

What is a dynamic array java?

894

How does finally block differ from finalize() method?

1005

What are benefits of java?

1008

Do you know how to reverse string in java?

1092

Define how objects are stored in java?

1000

What is javac in java?

957

How we can make copy of a java object?

1045

Is it possible to override private or static method in java?

949

What are the various access specifiers for java classes?

1012

What is an enumeration?

1012

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