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 7211

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

Wipro,

4 9613

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 7460

what is the difference between application server and web server?

Cegonsoft, IBM,

5 11895

what is meant by proxy server

1 4950

Which implicit object in jsp is synchronized?

5 11191

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 10537

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 9008

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 12180

Diffrence between arraylist and hashmap

Oracle,

3 8500

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Un-Answered Questions { J2EE }

Is string a primitive data type in java?

999

What is certificate authority?

1038

What are the technologies a java developer must know?

947

What is deployer?

1037

What is setbounds in java?

1137

Why class is used in java?

940

How many types of modules is defined by j2ee specification?

942

What are j2ee concepts?

1003

What is java j2ee developer?

944

What is button in java?

968

What is containers in java?

920

What is java used for in technology?

971

What is java advanced?

951

What does the application client module contain?

976

What is j2ee product provider?

975

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