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 is command line argument

TCS,

1188

What is the difference between delete and delete[]

Amazon,

3 1529

What is the difference between the Reader/Writer class hierarchy and the InputStream/OutputStream class hierarchy?

1131

What is the purpose of the System class?

994

Explain about oops concepts.

Aditi Placement Service,

1121

Difference between string s= new string (); and string s = "abv";?

Cap Gemini,

1212

Explain about complier design(phases)

Aditi Placement Service,

1079

Explain about doubly linked list

Aditi Placement Service,

1026

What is compiler and what its output.

Cognizant,

1147

What is runtime locatable code?

Cognizant,

1420

What restrictions are placed on method overriding?

1173

What is an array in java?

1192

Explain how can you debug the Java code?

BirlaSoft,

1064

Explain the difference between an Interface and an Abstract class?

BirlaSoft,

1169

Explain the purpose of garbage collection in Java?

BirlaSoft,

1022

Un-Answered Questions { Java J2EE }

What is meant by unidirectional and bidirectional?

409

What is high level language in computer?

1018

How you will decide when to use prototype scope and when singleton scope bean?

400

Is void a data type?

952

How Can Port Number Be Checked ?

1072

What is the difference between struts and spring? Explain

902

What environment variables do I need to set on my machine in order to be able to run java programs?

1014

mention how does a websphere or any application server clustering work?

843

Tell the new features added in servletrequest interface i.e. Servlet 2.4

1167

What are the steps to connect to the database in java?

967

If a java process keeps going down due to an out of memory error, what all java options would you start with that would tell you what was in memory at the time of the out of memory error?

1049

what is session in java?

1244

What do you understand by jdbc statements?

1021

What is the buffer limit?

1027

Do I need java on my pc?

1039

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