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 7461

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

1 9964

how to make hashmap object as synchronized object?

BOB Technologies,

2 5628

how to execute main()

Symphony, TCS,

4 8269

can we overload main method?

TCS,

8 9767

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

1 5548

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 10691

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 5188

Can we override the main method?

4 7598

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

1820

can write code for serialization ?

HCL, MegaSoft,

1 4134

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

2 4896

How to print a statement without using semicolan in java

HCL, IBM,

6 11999

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

NIIT, TCS,

2 6272

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

NIIT,

2315

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Un-Answered Questions { Core Java }

Why main function is static?

1248

From the two, which would be easier to write: synchronization code for ten threads or two threads?

1052

What are classloaders?

1021

Can a final variable be manipulated in java?

981

Is string serializable in java?

1023

What is flag in java?

992

What are wrapped classes in java programming?

1055

Is 0 true or is 1 true?

965

What is a consumer in java?

1016

Should a main method be compulsorily declared in all java classes?

1067

What is java jit compilers?

1013

What is immutable state?

1027

What is a predicate method?

1017

What is the function of http?

1032

What is the use of static methods?

1041

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