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 5787

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

2387

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 12695

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 9541

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 4325

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

Nissan,

2491

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

CTS,

10 29822

why an outer class cannot be declared as private?

1 4323

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

TCS,

1 10129

how java is os independent language ?

3 5533

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

3 6510

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

Nokia,

8 32933

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

TCS,

2 5190

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

IBM, TCS,

3 8482

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

HCL,

3 8915

Un-Answered Questions { Java J2EE }

Is eclipse written in java?

965

What is the difference between swing and applet?

1018

How to render an html page using only swing.

1004

Name the types of transaction management that are supported by spring?

478

What is the default port of weblogic admin server?

1148

State some advantages of java?

1244

What are the main components of multi-tier architecture?

929

What do you understand by casting in java language?

1031

We often see BSU when using weblogic. What is the meaning of BSU ?

1049

why do we need a digital signature?

1106

Name the types of jdbc drivers.

918

What is a pointcut?

389

What is the advantage of namedparameterjdbctemplate?

964

When do we use execute method in java jdbc?

993

What is swing?

1019

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