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Java J2EE Interview Questions
Questions Answers Views Company eMail

what is mean by hasing and maping in java platform and advantage?

CTS,

2379

whats the difference between == and .equal ?

Cisco,

10 15996

what is meant by package in java?

 5 11297

What is in Hibernate? How exactly inheritance of Object to Tables can be done? What is the benefits of discriminator?

AppLabs,

1 7478

class A { private int i; } class B extends A { private int i; } if I create an object of B class what will be the memory of that object.

Yamaha,

2 8516

how to fing linkedlist is circular or not?

TCS,

1 4004

what is the main class of all the classes

Photon,

5 7863

what are the boundaries of jdk and jre?

CoreObjects,

2085

How will you measure that int takes up only 32 bits in memory?

Rolta,

2 5771

Map map = new HashMap(2); map.add(“1”,”one”); map.add(“2”,”two”); map.add(“3”,”three”); What will happen at this line?

Rolta,

5 15998

Write down program for following scenario. Use java coding standard. You have array list with some words in it..we will call it as dictionary….and you have a arbitrary string containing some chars in it. You have to go through each word of dictionary and find out if that word can be constructed with the help of chars from arbitrary string given. If you find the word print it else print none.

Rolta,

2729

Can we iterate through collection using for loop?

Rolta,

2 6173

Why Set interface contains unique elements, what internally implemented for this so that it contains unique elements?

Rolta, TCS,

1 8106

What will be the output of the program? public class Test { public static void main(String args[]) { ArrayList list = new ArrayList(); list.add("2"); list.add("3"); list.add("4"); list.add("5"); System.out.println("size :"+list.size()); for(int i=0;i

Rolta,

5 8465

JVM is platform independent or depeneded?

 7 9729

Un-Answered Questions { Java J2EE }

How to read request headers from servlets?

1048

Which keyword specify that a variable is effectively final ?

989

How does ioc work in spring?

459

What is the diffrence between a local-tx-datasource and a xa-datasource?

1051

What is public/private protected in java?

1041

Define thin client?

956

When singleton beans are created in spring?

479

What do you understand by @requestmapping annotation?

583

what are abstract functions?

1026

can I implement my own start() method? : Java thread

991

Why java is said to be pass-by-value ?

1038

What is the difference between RMI and Corba?

2749

Is orphanremoval true?

409

What are the struts2 error message keys that can come during file uploading process?

1072

What are advice, aspect, join-point and point cut in spring?

393

For More Un-Answered { Java J2EE } Questions Click Here