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 7216

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

Wipro,

4 9616

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

2645

how to run servlet program between two computer through internet ?

TATA,

2995

what is the difference between servlets and jsp?

Cegonsoft,

2 7464

what is the difference between application server and web server?

Cegonsoft, IBM,

5 11897

what is meant by proxy server

1 4950

Which implicit object in jsp is synchronized?

5 11193

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

Oracle,

4 16534

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 10539

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 7365

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 9009

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 11050

Difference between treemap & sortedset

Oracle,

3 12183

Diffrence between arraylist and hashmap

Oracle,

3 8503

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Un-Answered Questions { J2EE }

What is a java developer?

1120

Why is java called object oriented?

1060

What is java transaction service (jts)?

1038

What is a java applet?

1005

Why is java considered dynamic?

1031

Why class is used in java?

941

How do you make a class immutable in java?

906

What is java ee server?

926

What is application client?

1043

Is java gui dead?

974

What is jaxr client?

1095

What do you understand by j2ee?

1007

What is difference between javac and java?

1096

What is java api for xml processing (jaxp)?

1023

What is home handle?

1018

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