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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,

32 53585

Differentiate Vector and ArrayList?

Wipro, Max Telecom,

6 6654

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

Wipro,

6 7185



What is an abstract class?

Wipro,

7 6059

How can final class be used?

Wipro, Accenture,

5 7904

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

Wipro,

1 9207

Java support what type of parameter passing ?

Wipro,

7 10536

Explain the term serialization?

Wipro,

10 8380

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

Wipro,

10 9683

What is Overriding and how can it be used?

Consagous, Wipro,

7 12413

How is serialization used generally ?

 3 3721

How are Swing and AWT be differentiated?

Wipro,

3 5219

Explain pass by reference and pass by value?

IBM, Wipro,

8 10420

In which way does a Primitive data type is passed ?

Sun Microsystems,

5 6644

What happens when a main method is declared as private?

L&T, DELL, Infosys, Sun Microsystems,

21 31555






Un-Answered Questions { Java J2EE }

what is meant by proxy server

2985

v-model life cycle

672

What is your platform?s default character encoding and how to know this?

885

What is scalable, portability in the view of J2EE?

948

Explain about thread synchronization inside a monitor?

1213

If goto and const is reserve words than why it is not work in java?

661

How do u provide security to ur project?(Banking domain project)

3562

we use MainFrame and using os390 for operating system with DB2 data base in IRAN and interest programing with java and use webspere for world wide,please help me where i should start?

1031

Open the find box and editing the text in text box then what is name for this dialog box??

1027

os is developed in c no java is more secured then c na why dont the os developed is developed using java

2398

AS a developer will u create a data source in connection pool? If so how will u do that, how to access the object from connection pool using IRAD tool?

735

How to connect to a remote database using Applet?

1208

What is JTS?

885

What are the SSL formats supported by iPlanet/SunOne?

454

What are the steps to write p-to-p model application?

1118

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