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Core Java Interview Questions
Questions Answers Views Company eMail

What is meant by Servelet? What are the parameters of service method?

2 5054

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

1 8669

how to make hashmap object as synchronized object?

BOB Technologies,

2 3779

how to execute main()

Symphony, TCS,

4 5030

can we overload main method?

TCS,

8 5883

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

1 4061

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 5669

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 3009

Can we override the main method?

4 4937

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

996

can write code for serialization ?

HCL, MegaSoft,

1 2661

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

2 3264

How to print a statement without using semicolan in java

HCL, IBM,

6 8446

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

NIIT, TCS,

2 4384

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

NIIT,

1431


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Un-Answered Questions { Core Java }

What is constructor and virtual function? Can we call a virtual function in a constructor?

247


who can i handle multiple client in RMI

1078


What data structures are used to perform recursion?

226


What about features of local inner class?

227


Why should we use singleton pattern instead of static class?

151






What Is Query Throttling in java?

231


Define how can we find the actual size of an object on the heap?

227


What is difference between == equals () and compareto () method?

181


Is class is a data type?

189


What is replaceall in java?

191


Explain the difference between abstract class and interface in java?

195


What is fail fast in java?

188


Do extraneous variables affect validity?

170


Why is java called java?

182


What are the difference between string, string builder, and string buffer in java?

206