A J2EE application or a Java 2 Platform Enterprise Edition application is any deployable unit of J2EE functionality. This can be a single J2EE module or a group of modules packaged into an EAR file along with a J2EE application deployment descriptor. J2EE applications are typically engineered to be distributed across multiple computing tiers.

Enterprise applications can consist of the following:

• EJB modules (packaged in JAR files);
• Web modules (packaged in WAR files);
• connector modules or resource adapters (packaged in RAR files);
• Session Initiation Protocol (SIP) modules (packaged in SAR files);
• application client modules;
• Additional JAR files containing dependent classes or other components required by the application;
• Any combination of the above.

See also

• Enterprise software

References

• http://java.sun.com/j2ee/1.4/docs/glossary.html