Java J2EE Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Java J2EE Interview Questions

Questions Answers Views Company eMail

Wt is the main difference between Java and Java J2EE and Advanced java?

Wipro,

5 23992

What is "Java Native Interface" and how to use it?

IBM,

1 6134

can any one tell me how to implement tcng (Traffic Control Next Generation) with HTB (Hierarchical Token Bucket) in Java?which particular class or API is used for that?

Accenture,

2896

What is the diff. b/w Interfaces & Abstract class?

Ericsson,

6 10768

Which of these methods belong to Thread & Object class? join, yield, sleep, wait, notify

Ericsson,

3 10370

Can we instantiate Interfaces?

Ericsson,

7 15946

What do you mean by the term transient?

Ericsson,

5 11729

What are the two ways you can synchronize a block of code?

Ericsson,

5 14378

Can we call destroy() method inside the init() method? What happens when we do so?

Ericsson,

9 24582

Package1 and Package2 both have a method name lets say "methodA" with different implementation. When I import both the packages in a java class how can I use both the methods?

Ericsson,

7 11584

How can you sort dates?

TCS,

2 9483

Why to give the file name same as the public class name in java?

3 7348

What happens when Two users requests for same action class? How the threads are controlled?

4 9161

What is a domain structure? Does include cluster(s) and server instance(s)?

Oracle,

3 10784

Is there any use of an abstract class which has no methods and no attributes?

Wipro,

1 5010

Un-Answered Questions { Java J2EE }

explain different ways of using thread? : Java thread

1079

hi actully i hav form columns with origin and destination names .as like as i need to create one more column with name amount. my requirement is when i select origin and destination columns automatically i need to get amount from database.how can i. please tel me with relative code

2865

Hi frnds how to lock an user when he enter wrong credentials more than 3 time using java or j2ee tech take username and password in a bean no need to connect DB and validate give me some sample application code or links its urgent for me thanks in advance

2415

What is the difference between equals() and == in java?

1032

What is latest hibernate version?

486

What is lazy class?

481

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136

How can you inject java collection in spring?

504

How to create a base64 decoder in java8?

1131

What are the contents on web.xml in struts application ?

1059

Write a program to find the whether a number is an Armstrong number or not?

1095

Write a java program to find the route that connects between Red and Green Cells. General Rules for traversal 1. You can traverse from one cell to another vertically, horizontally or diagonally. 2. You cannot traverse through Black cells. 3. There should be only one Red and Green cell and at least one of each should be present. Otherwise the array is invalid. 4. You cannot revisit a cell that you have already traversed. 5. The maze need not be in the same as given in the above example

2659

What is action chaining ?

1160

What is a classloader in java?

1084

what are the different modes of archival? Explain each mode in two lines each?

994

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