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 7462

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 8270

can we overload main method?

TCS,

8 9770

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 10692

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 5190

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 4136

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

2 4897

How to print a statement without using semicolan in java

HCL, IBM,

6 12002

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,

2316

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Un-Answered Questions { Core Java }

How do you invoke a method?

1005

Why arraylist is not synchronized in java example?

1067

Which non-unicode letter characters may be used as the first character of an identifier?

1007

Write a program to solve producer consumer problem in java?

1013

Define inheritance?

1018

How do you override a private method in java?

983

Is upper case in java?

963

Compare java and python.

990

What are the types of collections in java?

1057

What is join () in java?

965

Why java is considered dynamic?

1177

What is the main difference between java platform and other platforms?

1106

What is java util list?

961

What is basic syntax?

1042

What is pojo class in java?

1103

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