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.

1 833

Briefly explain the term Spring Framework

1 816

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

1 938

What is a Java Virtual Machine?

1 795

. Define Copy Constructor in Java

1 826

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

1 829

Define Wrapper Classes in Java.

1 759

Define package in Java.

1 800

. Differentiate between instance and local variables.

1 872

. Explain Java String Pool.

1 818

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

1 812

Why is Java a platform independent language?

1 902

Why is the main method static in Java?

1 900

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

1 820

What is the difference between the program and the process?

1 902

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Un-Answered Questions { Core Java }

What is the difference between delete and delete[]

1546

Is string a wrapper class?

1016

How do you detect memory leaks?

1058

What is nextline method in java?

1030

How to sort an unsorted array in java?

1133

Is static a keyword in java?

984

What is the use of default method in interface in java? Explain

1006

What is difference between iterator access and index access?

1064

What is the maximum size of arraylist in java?

1008

Explain the Propertie sof class?

1050

How do I get the | symbol on my keyboard?

1084

which pattern is default in scanner package?

2235

What purpose do the keywords final, finally, and finalize fulfill?

1095

Can constructor be static or final?

1089

What is the purpose of a parameter?

1074

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