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,

1196

What is the difference between delete and delete[]

Amazon,

3 1558

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

1135

What is the purpose of the System class?

1005

Explain about oops concepts.

Aditi Placement Service,

1126

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

Cap Gemini,

1219

Explain about complier design(phases)

Aditi Placement Service,

1085

Explain about doubly linked list

Aditi Placement Service,

1035

What is compiler and what its output.

Cognizant,

1153

What is runtime locatable code?

Cognizant,

1437

What restrictions are placed on method overriding?

1187

What is an array in java?

1206

Explain how can you debug the Java code?

BirlaSoft,

1077

Explain the difference between an Interface and an Abstract class?

BirlaSoft,

1176

Explain the purpose of garbage collection in Java?

BirlaSoft,

1033

Un-Answered Questions { Java J2EE }

What is event and listener in java?

823

What is the Hibernate proxy?

594

how to connect from struts to database through hibernet and where u can modify the class

2559

Why java is not 100% object-oriented?

1516

What is @entity annotation in spring?

492

What are multiple inheritances?

1113

How can you use spring to resolve collaborators for your bean?

409

What is abstraction in java?

1096

What is a module function?

1107

How is the security handled in web logic j2ee connector architecture?

1057

What is the intersection and union methods?

1025

Considering notepad/ie or any other thing as process, what will happen if you start notepad or ie 3 times? Where 3 processes are started or 3 threads are started?

1156

Write a program to reverse array in place?

1073

Can a class with private constructor be extended?

948

What is a vararg?

1038

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