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 7585

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

1 10058

how to make hashmap object as synchronized object?

BOB Technologies,

2 5724

how to execute main()

Symphony, TCS,

4 8403

can we overload main method?

TCS,

8 9989

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

1 5612

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 10834

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 5330

Can we override the main method?

4 7718

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

1860

can write code for serialization ?

HCL, MegaSoft,

1 4213

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

2 5004

How to print a statement without using semicolan in java

HCL, IBM,

6 12169

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

NIIT, TCS,

2 6354

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

NIIT,

2387

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Un-Answered Questions { Core Java }

Differentiate between postfix and prefix operators in java.

1181

What is the use of pattern in java?

1104

What is scope & storage allocation of global and extern variables? Explain with an example

1092

Where is the find and replace?

1056

Is {a, n, d} a palindrome? If you are given a random string, is it a palindrome or not?

1195

How to sort numbers in java without array?

1039

What are facelets templates?

1081

What is JVM and is it platform independent?

1107

When does a class need a virtual destructor?

1066

What is the use of flag?

1135

Suppose if we have variable ' I ' in run method, if I can create one or more thread each thread will occupy a separate copy or same variable will be shared?

1121

What is hashing principle in java?

1080

Is arraylist ordered in java?

1170

What is the difference between form & report?

1086

What is skeleton and stub?

1161

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