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 8109

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 8483

JVM is platform independent or depeneded?

7 9734

what is type of statement in jdbc connection?

3 5436

What are the types of classes in java?

HCL,

4 9283

What is the difference between interpreter and compiling ?

TCS,

2 4391

What is the difference between interpreter and compiling ?

TCS,

7 9265

what is platform

i3 Solutions,

2 4393

what is platform native code

i3 Solutions,

2 5485

what is language and it responsibilities

1 3418

what is translator and it types

1 3505

what are the application of compiler and interpreter for source program

2 4666

what is platform dependent translation and platform dependent programming language

2 4134

what is net based application and its types

1 3544

justify c is portable

1 3680

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Un-Answered Questions { Core Java }

How do you decide when to use arraylist and linkedlist?

991

How are this() and super() used with constructors in java programming?

1063

Why to use nested classes in java?

1120

What is int lol?

1140

Which is bigger double or float?

971

How java enabled high performance?

1051

How are observer and observable used in java programming?

1029

What is a function in programming?

1043

Can we override the overloaded method?

1149

What are different types of states exist for a thread?

1008

Explain 5 features introduced in jdk 1.7?

1028

How many types of array are there?

1008

How do you use compareto?

948

Which access specifier can be used with class ?

1000

What is a jagged array in java?

1114

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