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 5622

how to execute main()

Symphony, TCS,

4 8266

can we overload main method?

TCS,

8 9762

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 4130

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

2 4893

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 6270

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

NIIT,

2315

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Un-Answered Questions { Core Java }

What is pojo class in java?

1102

What is instance synchronization?

1048

Is java hard to learn?

901

Is 0 true or false in java?

986

If a class is declared without any access modifiers, where may the class be accessed in java programming?

1216

How to create an interface?

1084

What is the default size of arraylist in java?

1128

What happens if an exception is throws from an object's constructor?

1133

What are some examples of variable costs?

955

Can we override constructor in java?

1093

Is this valid in java ? Can we instantiate interface in java?

983

What is the declaration statement?

948

How to implement a multithreaded applet?

2671

What is exception handling in java?

1035

Can we sort arraylist in java?

992

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