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 7022

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

Wipro,

4 9457

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

2578

how to run servlet program between two computer through internet ?

TATA,

2940

what is the difference between servlets and jsp?

Cegonsoft,

2 7330

what is the difference between application server and web server?

Cegonsoft, IBM,

5 11681

what is meant by proxy server

1 4870

Which implicit object in jsp is synchronized?

5 10956

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

Oracle,

4 16362

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 10320

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 7251

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 8792

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 10891

Difference between treemap & sortedset

Oracle,

3 12036

Diffrence between arraylist and hashmap

Oracle,

3 8324

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Un-Answered Questions { J2EE }

What are the component of java?

898

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

861

What is frame in java?

910

What is element?

936

Why frameworks are used in java?

898

Describe the ear, war, and jar.

917

What is java api for xml-based rpc (jax-rpc)?

962

What is container-managed transaction?

1045

What type of code is java?

874

What is java ee server?

873

What is deployment descriptor?

973

What is j2ee specification?

889

What is enterprise information system resource?

964

What are the components of J2EE application?

1009

How many types of objects are there in java?

856

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