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 is the effect of keeping a constructor private?

964

What is the use of inner class?

1061

What languages are pass by reference?

1069

What is singleton class example?

1049

What is the difference between class forname and new?

1020

What is the difference between pass by reference and pass by pointer?

1119

Which is better singleton or static class?

1002

What is the meaning of course?

1116

Why do we need singleton class?

1018

What is the difference between call by reference and call by pointer?

984

What is the difference between sop and work instruction?

937

Why is logger singleton?

1143

What is pass by value?

958

What is t in parametric equations?

1007

What is the purpose of a parameter?

1092

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Un-Answered Questions { Core Java }

List the three steps for creating an object for a class?

986

How to change the priority of thread or how to set priority of thread?

1039

What is the Scope of Static Variable?

1246

Can java arraylist hold different types?

1090

What is jit compiler ?

994

Explain 5 features introduced in jdk 1.7?

1037

how to create multithreaded program? Explain different ways of using thread? When a thread is created and started, what is its initial state? : Java thread

1031

explain local datetime api in java8?

1029

What do you mean by object?

994

Explain with example the concept of constant variable in java.

1208

What is anonymous inner class?

1093

Is a method a procedure?

1066

what is singleton in java?

1067

Why is an interface be able to extend more than one interface but a class can’t extend more than one class?

1186

What do you mean by ordered and sorted in collections in java?

1003

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