When writing J2EE web applications, web services, enterprise Java beans (EJBs) or other pieces of code that run on a Java application server such as RedHat’s JBoss, IBM WebSphere or Apache Tomcat, a developer typically doesn’t load database drivers or connect to the database directly. Instead, a context lookup must be made in order to get a DataSource, and from there a Connection. However what if one needs to run existing code locally, outside of the web server? This guide shows developers how to setup a local context so application server code can be run in a stand-alone application without modification.
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