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 7583

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

1 10048

how to make hashmap object as synchronized object?

BOB Technologies,

2 5718

how to execute main()

Symphony, TCS,

4 8394

can we overload main method?

TCS,

8 9979

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

1 5610

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 10821

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 5319

Can we override the main method?

4 7714

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

1857

can write code for serialization ?

HCL, MegaSoft,

1 4208

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

2 4997

How to print a statement without using semicolan in java

HCL, IBM,

6 12168

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

NIIT, TCS,

2 6350

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

NIIT,

2383

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Un-Answered Questions { Core Java }

If A Class Is Declared Without Any Access Modifiers, Where May The Class Be Accessed?

1220

If a method is declared as protected, where may the method be accessed in java programming?

1049

What a static class can contains?

1194

Why set is used in java?

1064

What is meant by data hiding in java?

1214

How is Object Oriented Programming different from Procedure Oriented Programming?

1086

What is string :: npos?

1173

How does linkedhashmap work in java?

1078

Why is string class considered immutable?

1103

How do you include a string in java?

1052

Why string objects are immutable in java?

1083

What is the purpose of the system class in java programming?

1180

What is an example of a boolean?

1117

What is diamond operator in java?

1019

What is the difference between serializable and externalizable interfaces?

1167

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