Java J2EE Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java (6529)
Advanced Java (552)
Swing (223)
EJB (402)

Servlets (804)
Struts (701)
JDBC (771)
JMS (324)

SunOne (10)
J2EE (485)
Weblogic (694)
Websphere (573)

Java J2EE Interview Questions

Questions Answers Views Company eMail

What are Interceptors?

1 5780

i would like to attend for an interview of datalab technologies company i want to know the pattern of imnterview.

2375

Suppose i have two threads t1 and t2 are running.How the main thread will know that the two threads t1,t2 execution has completed?

Subex,

2 12678

i am user who logined the application..after that another valid user will also logind..so that is it neccessary to create jdbc connection for each and every user...plz explain it with proper answer...plz help me

IBM,

5 9510

I have a string like _a01_a02_a03_ and another string like _2_1.5_4_ as input.I want to extract a01,a02... to a string array and 2,1.5,etc to a double array with a01 corresponds to 2 and a02 to 1.5 etc. Need code in core java.. Can you do it?

Cognizant,

1 4318

write a program that list all permutations of ABCDEF in which A appears before B?

Nissan,

2483

what is the difference between System.out.println and out.println in java

CTS,

10 29793

why an outer class cannot be declared as private?

1 4317

how to create Calculator GUI using Gridbaglayout as like as Window Calculator??????????? (Open calculator Go-->Run-->type calc-->Enter)

TCS,

1 10122

how java is os independent language ?

3 5519

What is abstraction with strong example program? (not a general program)

3 6506

Why Java is called as purely platform independent..? Explain briefly..dont Give regular answers Explain with your own example..?

Nokia,

8 32895

Can any one say how will sort map objects in java?

TCS,

2 5178

How can u create the Object of class Without using "New" opertor?

IBM, TCS,

3 8473

How can two threads be made to communicate with each other?

HCL,

3 8900

Un-Answered Questions { Java J2EE }

Are global variables initialized to zero?

957

What is considered an anti pattern?

930

What are different data types?

1022

What is java spring?

429

What do you mean by configuration annotation in spring?

397

What are the steps involved in deploying themes and skins in a clustered production websphere portal environment ?

822

What are the features of spring?

415

What is a file pointer?

1074

What is webapplicationcontext?

419

What about static nested classes in java?

1141

Where to store local variables?

1101

What is a parent class in java?

1014

What is orm principle?

382

How do I know if java is installed?

1083

What is in-memory replication?

1060

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