Is there a “best” or most popular database for standalone Java app?

Question

Is there a \"best\" or more popular database for standalone Java app? I\'m currently writing by hand, but I would like to know what is commonly done, if there is something t

Answer 1

Java 6 ships with Derby (renamed JavaDB). It can be used in memory or server mode.

HyperSQL (HSQLDB) is also popular.