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 7302

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

1 9854

how to make hashmap object as synchronized object?

BOB Technologies,

2 5480

how to execute main()

Symphony, TCS,

4 8034

can we overload main method?

TCS,

8 9456

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

1 5457

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 10449

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 4987

Can we override the main method?

4 7412

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

1747

can write code for serialization ?

HCL, MegaSoft,

1 4026

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

2 4736

How to print a statement without using semicolan in java

HCL, IBM,

6 11762

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

NIIT, TCS,

2 6143

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

NIIT,

2252

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Un-Answered Questions { Core Java }

What are the six ways to use this keyword?

1007

Are arrays dynamic in java?

978

Write a method to check if input string is palindrome?

963

How does predicate work in java?

936

Define linked list and its features with signature?

931

Will the jvm load the package twice at runtime?

1043

What is the order of arraylist in java?

1059

What is the default value of float and double datatype in java?

955

Why main method is static in java?

1101

Why to use nested classes in java?

1040

Can we create our own daemon thread?

924

What is an immutable object? How do you create one in java?

1011

How do I compare two strings in word in java?

934

Why string is called as immutable?

888

Explain different forms of polymorphism?

1095

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