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 7459

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

1 9962

how to make hashmap object as synchronized object?

BOB Technologies,

2 5623

how to execute main()

Symphony, TCS,

4 8266

can we overload main method?

TCS,

8 9763

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 5185

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.....

1818

can write code for serialization ?

HCL, MegaSoft,

1 4131

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

2 4894

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 6271

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

NIIT,

2315

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Un-Answered Questions { Core Java }

What does opcode mean?

1084

What is java abstraction with example?

1067

How the metacharacters are different from the ordinary characters?

1021

Why stringbuilder is not thread safe in java?

1015

What are predicates in java 8?

1016

What is the advantage of preparedstatement over statement?

1109

What exactly is java?

943

What is communist flag?

1015

what is the purpose of the runtime class?

1065

is it possible to instantiate the math class?

1034

What are scriptlets?

1087

Why deletion in linkedlist is fast than arraylist?

1104

What are anonymous inner classes?

1010

Is it possible for yielded thread to get chance for its execution again ?

1030

What is a class component?

1174

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