Java J2EE Interview Questions
Questions Answers Views Company eMail

What is garbage collection in Java, and how can it be used ?

Infosys, HCL, Accenture, Wipro, Sara, SITS,

31 47579

Differentiate Vector and ArrayList?

Wipro, Max Telecom,

4 4714

Differentiate constructor and a method and how are it be used?

Wipro,

6 5199

What is an abstract class?

Wipro,

6 4197

How can final class be used?

Wipro, Accenture,

3 6066

By what default value is an object reference declared as an instance variable?

Wipro,

1 7296

Java support what type of parameter passing ?

Wipro,

7 8462

Explain the term serialization?

Wipro,

10 6612

Is there is any error if you have multiple main methods in the same class?

Wipro,

10 7812

What is Overriding and how can it be used?

Consagous, Wipro,

7 10867

How is serialization used generally ?

2 2645

How are Swing and AWT be differentiated?

Wipro,

3 4544

Explain pass by reference and pass by value?

IBM, Wipro,

7 8764

In which way does a Primitive data type is passed ?

Sun Microsystems,

5 5114

What happens when a main method is declared as private?

L&T, DELL, Infosys, Sun Microsystems,

18 23202



Un-Answered Questions { Java J2EE }

java program with complete 4 oops concepts implemented example

1743


what is the meaning of following code snippets Class c=class.forName(driverClassName); Driver d=(driver)c.newInstance();

2370


How to migrate the weblogic domains Existing physical box to New box ? Assume:I have 2 Domains and 5 ms servers and i have deploy the application in managed servers in cluster Envirolment how to migrated? any budy give me steps ?

415


What are the sequence of steps to write pub or sub model kind of application?

803


how to run servlet program between two computer through internet ?

1479


what is meant by JRMP?

828


How will you serialize a singleton class without violating singleton pattern?

536


How data can be inserted into long row column of database?

825


how the HTML data stored in web server?

799


difference between  ejb,struts,hibernate,spring and jsp

829


What is JMS API Architecture?

145


What is the form of storage space in java?

807


What is the Spring2.5 MVC Navigation flow?

3254


Name the class that is used to bind the server object with RMI Registry?

771


why java uses class level type casting ?

1195