J2EE Interview questions and answers

121. What is J2EE product 

An implementation that conforms to the J2EE platform
specification. 

122. What is J2EE product provider 

A vendor that supplies a J2EE product. 

123. What is J2EE server 

The runtime portion of a J2EE product. A J2EE server
provides EJB or Web containers or both. 




124. What is J2ME 

Abbreviate of Java 2 Platform, Micro Edition. 

125. What is J2SE 

Abbreviate of Java 2 Platform, Standard Edition. 

126. What is JAR 

Java archive. A platform-independent file format that
permits many files to be aggregated into one file. 




127. What is Java 2 Platform, Enterprise Edition
(J2EE) 

An environment for developing and deploying enterprise
applications. The J2EE platform consists of a set of
services, application programming interfaces (APIs),
and protocols that provide the functionality for
developing multitiered, Web-based applications. 



128. What is Java 2 Platform, Micro Edition (J2ME) 

A highly optimized Java runtime environment targeting
a wide range of consumer products, including pagers,
cellular phones, screen phones, digital set-top boxes,
and car navigation systems. 

129. What is Java 2 Platform, Standard Edition (J2SE) 

The core Java technology platform. 

130. What is Java API for XML Processing (JAXP) 

An API for processing XML documents. JAXP leverages
the parser standards SAX and DOM so that you can
choose to parse your data as a stream of events or to
build a tree-structured representation of it. JAXP
supports the XSLT standard, giving you control over
the presentation of the data and enabling you to
convert the data to other XML documents or to other
formats, such as HTML. JAXP provides namespace
support, allowing you to work with schema that might
otherwise have naming conflicts.