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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, TCS,

32 57523

Differentiate Vector and ArrayList?

Wipro, Max Telecom,

6 8109

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

Wipro,

7 8590



What is an abstract class?

Wipro,

7 7392

How can final class be used?

Wipro, Accenture,

5 9297

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

Wipro,

1 10654

Java support what type of parameter passing ?

Wipro,

7 11925

Explain the term serialization?

Wipro,

10 9763

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

Wipro, Infosys,

10 11105

What is Overriding and how can it be used?

Consagous, Wipro,

7 13552

How is serialization used generally ?

 3 4536

How are Swing and AWT be differentiated?

Wipro,

3 5845

Explain pass by reference and pass by value?

IBM, Wipro,

8 11943

In which way does a Primitive data type is passed ?

Sun Microsystems,

5 7713

What happens when a main method is declared as private?

L&T, DELL, Infosys, Sun Microsystems,

22 36647






Un-Answered Questions { Java J2EE }

We are seeing so many videos/audios as many web sited. But question is these videos or audios are stored in Databases ( Oracle, Mysql, Sybase,... ) or stored any file directory from there they will give the link for that? Pls explain and give sample code to achieve this one? Thanks, Seenu.

820

In Future how the role of WEBLOGIC in realtime ?

848

what are the new features of Webservices 1.6 than 1.4.From the interface and implementation aspect4.

1026

hi am an engineering student and my next plan is for ms in either in us or australia i got my passport but i dont know anything bout visa can u give brief idea 1)How to get prepared for visa and 2)How to apply for top universities and 3)How to pay the fee and so on These all are basic questions plz give me a clear idea

835

Where will it be used?

708




What is Point-to-Point Approach?

566

what is meant by JRMP?

1131

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 ?

766

FOR EXAMPLE WE R HAVING TWO LIST ELEMENTS ..BOTH LISTS CONTAINS ID,NAME,PLACE ..I NEED TO COMPARE BOTH IDS IN TWO LISTS,IF ID'S R SAME MEANS WE HAVE ADD THE DETAILS(LIKE NAME,PLACE) TO MAP...HOW IS POSSIBLE ?CAN ANY ONE SUGGEST?

1680

When we can update the application? Is server up time or downtime?

289

How to explain Software Bank Loan descriptions

1225

Hi all, I am dng a mini project on FileSplitter application which splits the GBs of logfile into Smaller chunks(mbs) depending on the split size." How to handle GBs file? I am getting OutOfMemoryException, when I input such GB sized file. Thx

900

How to Allowe messages to expire ?

384

who will give req's to u?. how they send req's to u? . what design documents contains?. when bugs raised on other developer code how to report to them?.(throgh mail or ........). how to retrive 100 recods from dao layer to presentation layer.using which collection?. what is sequence diagram.?.

997

What collections you have worked on? Internal working of Hashmap?

1121

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