Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

Why Set interface contains unique elements, what internally implemented for this so that it contains unique elements?

Rolta, TCS,

1 8029

What will be the output of the program? public class Test { public static void main(String args[]) { ArrayList list = new ArrayList(); list.add("2"); list.add("3"); list.add("4"); list.add("5"); System.out.println("size :"+list.size()); for(int i=0;i

Rolta,

5 8295

JVM is platform independent or depeneded?

7 9502

what is type of statement in jdbc connection?

3 5298

What are the types of classes in java?

HCL,

4 9146

What is the difference between interpreter and compiling ?

TCS,

2 4290

What is the difference between interpreter and compiling ?

TCS,

7 9016

what is platform

i3 Solutions,

2 4297

what is platform native code

i3 Solutions,

2 5370

what is language and it responsibilities

1 3346

what is translator and it types

1 3434

what are the application of compiler and interpreter for source program

2 4554

what is platform dependent translation and platform dependent programming language

2 4020

what is net based application and its types

1 3433

justify c is portable

1 3617

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Un-Answered Questions { Core Java }

What are the topics in core java?

1019

Explain the difference between abstract classes and interfaces in java?

1114

What are the different types of methodologies?

959

Which sorting algorithm is best in java?

950

Can we call virtual funciton in a constructor ?

2154

What is the return type of the main method?

994

What is the advantage of functional interface in java 8?

958

Why java is made?

930

What does system.gc() and runtime.gc() methods do?

1003

Does garbage collection occur in permanent generation space in jvm?

1037

What is a class variable?

1004

What are classloaders?

976

Write a java program for binary search?

1015

What happens if we don’t override run method ?

955

what is instanceof operator used in java?

988

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