100% pure Java database

Question

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Embedded java databases

I want to embed a java relational database in my web application which I can just use by dropping a JAR file in the libs directory. What choices do I have?

Answer 1

The most popular one is hsqldb. It's easy to use either as a RAM only database (very comfortable for tests) or file based.

Answer 2

Apache Derby MySQL also has a Java embedded product

Answer 3

java has has a small database included from version 6 on

http://www.oracle.com/technetwork/java/javadb/index.html

it's a fork of http://db.apache.org/derby/

another popular choice is http://hsqldb.org/

Answer 4

There is H2:

Welcome to H2, the Java SQL database. The main features of H2 are:

• Very fast, open source, JDBC API
• Embedded and server modes; in-memory databases
• Browser based Console application
• Small footprint: around 1 MB jar file size

http://www.h2database.com/html/main.html

Answer 5

You could try Apache Derby DB, a variant of which is included in J2SE 6.

Answer 6

There is also Java DB called Derby here.

Answer 7

• H2
• HSQLDB
• Derby
• Mckoi (no longer in development)