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 meant by Servelet? What are the parameters of service method?

2 7341

What is meant by Session? Explain something about HTTP Session Class?

1 9874

how to make hashmap object as synchronized object?

BOB Technologies,

2 5501

how to execute main()

Symphony, TCS,

4 8081

can we overload main method?

TCS,

8 9522

we cannot create an object of interface but we can create a variable of it

1 5477

There are three interfaces A,B & C. A extends B, B extends C, and C extends A.Is it multiple Inheritance? please anybody help me.....

5 10503

abstract class A{ int list []=new int [100]; A(int x,int y){ rondom n=new rondom(); for (int i==;i<100;i++); list [i]=x+r.next int(y-x+1); abstract sort (); abstract binary sarch(int temp); class B extends A{

3 5023

Can we override the main method?

4 7449

make a method which any number and any type of argument and print sum of that arguments.....

1754

can write code for serialization ?

HCL, MegaSoft,

1 4041

What is Yield() method when we r using this ? tell exactly

2 4763

How to print a statement without using semicolan in java

HCL, IBM,

6 11811

Hi friends i want display Triangle shap stars(*) please can tell me any one java code logic? * *** ***** ******* Like this

NIIT, TCS,

2 6162

What is the difference between Java1.4 and Java1.5

NIIT,

2264

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Un-Answered Questions { Core Java }

Can you make a constructor final in Java?

1074

How does hashmap work in java ?

990

Which access specifier can be used with class ?

953

What loop means?

906

What is string in java with example?

955

Can an object subclass another object?

1034

What is Enum in Java?

1223

What happens when main () method is declared as private?

1094

How do you find the independent variable?

993

What is initial size of arraylist in java?

1005

In the below example, what will be the output?

983

What is the simpletimezone class in java programming?

1088

How is a structure different from array ?

997

Is void a return type?

915

What are the differences between abstract class and interface?

1002

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