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 5439

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

Wipro,

4 8107

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

2060

how to run servlet program between two computer through internet ?

TATA,

2532

what is the difference between servlets and jsp?

Cegonsoft,

2 6277

what is the difference between application server and web server?

Cegonsoft, IBM,

5 9739

what is meant by proxy server

1 4150

Which implicit object in jsp is synchronized?

5 9117

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

Oracle,

4 14878

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 8577

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 6290

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 7077

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 9586

Difference between treemap & sortedset

Oracle,

3 10887

Diffrence between arraylist and hashmap

Oracle,

3 6813


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Un-Answered Questions { J2EE }

What are the four components of j2ee application?

554


What is distributed application?

526


What every java developer should know?

465


Where is java used?

482


What is caller principal?

548






What is containers in java?

433


What is the use of method saveorupdate()?

546


What is ejb jar file?

454


Why is java used?

503


What is j2ee application model?

466


What is layout manager in java?

454


What are the components of awt in java?

489


What is home handle?

518


Are java primitives objects?

461


How to invoke stored procedure in hibernate?

479