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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,

2388

whats the difference between == and .equal ?

Cisco,

10 16049

what is meant by package in java?

 5 11313

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

AppLabs,

1 7481

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 8522

how to fing linkedlist is circular or not?

TCS,

1 4013

what is the main class of all the classes

Photon,

5 7883

what are the boundaries of jdk and jre?

CoreObjects,

2089

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

Rolta,

2 5783

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 16019

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,

2739

Can we iterate through collection using for loop?

Rolta,

2 6182

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

Rolta, TCS,

1 8114

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 8495

JVM is platform independent or depeneded?

 7 9747

Un-Answered Questions { Java J2EE }

What are the bundled validators?

1016

What are the 4 types of characters?

1014

Which swing methods are thread-safe?

1121

What does it mean that a class or member is final?

997

What does regex mean?

1017

Who found java?

986

What checkbox method allows you to tell if a checkbox is checked?

1011

What is the same as procedures?

988

What do you understand by private, protected and public?

1041

Can we sort list in java?

974

What are the two scope types for formbeans?

1238

what is deadlock? : Java thread

1015

What are user defined exceptions?

1055

Are the struts tags xhtml compliant ?

939

Is not bound in this context unable to find jdbc spring boot?

906

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