JE installation is very simple, in Google Search Berkely DB Enter the Sleepycat Download the Installation Pack. Unlock the installation package in Linux, then modify .bash_profile setting JE_HOME. That is, in the unwrapping directory with a docs directory, use the method written in detail, just in Build it provides Example, in addition to the need Ant , You also need JUnit, download JUnit and put it in the Lib Directory of Ant. Then follow the method inside the DOCS, you can run the simplest example, Berkeley DB's concurrency ability is very strong, this time it launched Berkeley DB Java Edition, it seems that its Java app will be popular!