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

J2EE Interview Questions

Questions Answers Views Company eMail

Whats the O/p of the below code snippet ? And explain how does it imply the concept of call-by-value/call-by reference. (PS : Pls ignore syntax errors) public class One { public oneA(){ sop ("Into One--");} } public class Two extends One{ public twoT(){ sop ("Into Two--"); } } public class Home { One a; Two t; public static void main(argv[]) { sop ("In Home--"); sop(a.oneA()); sop(t.oneA()); sop(a.twoT()); sop(t.twoT()); } }

Wipro,

4 7050

Explain the following statement: Java is always pass-by-value.

Wipro,

4 9476

what is direct link to download swing ebook,applet,ejb,core java

2585

how to run servlet program between two computer through internet ?

TATA,

2945

what is the difference between servlets and jsp?

Cegonsoft,

2 7349

what is the difference between application server and web server?

Cegonsoft, IBM,

5 11708

what is meant by proxy server

1 4876

Which implicit object in jsp is synchronized?

5 11002

What is the use of RequestProcessor, if we are having ActionServlet in struts

Oracle,

4 16382

static variable is a class variable which value remains constant for the entire class?? variable means value is changed....hear value is not changed... why it is called static variable

Infosys,

5 10348

Write a program for Sum of the digits for a given number Ex: suppose user entered Number is 1214, It should calculate the above number like 1+2+1+4 = 8

Amazon,

2 7270

Write a program to display numeric value in reverse order. Ex: I have given a number like 7584, It should display in reverse order like 4857.

6 8829

write a program, when a statement is entered, it should display in reverse order. Ex: Statement is "I am writing program in reverse order". Output should be like "order reverse in program writing am I".

4 10906

Difference between treemap & sortedset

Oracle,

3 12050

Diffrence between arraylist and hashmap

Oracle,

3 8353

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Un-Answered Questions { J2EE }

What is container-managed persistence?

1029

What is j2ee product provider?

932

Is tomcat a java ee?

891

Is java a tool?

920

Is c++ more secure than java?

904

What is event and listener in java?

823

What are the components of j2ee?

884

What is fatal error?

1022

What is authorization constraint?

946

What is java developer job description?

888

Describe the file types *.ear, * .jar and *.war?

997

What is front end technology in java?

981

What are the advantages of object-relational mapping (orm)?

873

What is the latest framework in java?

924

What is deployment descriptor?

982

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