JAVA XMI

1.JMI
http://java.sun.com/products/jmi/implementations.html
2.AndroMDA: implements JMI
http://www.andromda.org

3.EMF: Eclipse

4.ArgoUML: support JMI
http://argouml-downloads.tigris.org/nonav/argouml-0.32/manual-0.32.pdf

Java Database

1.Derby (JavaDB)
2.hsqldb
3.H2
4.sqlite
5.BDB
6.Tokyo Cabinet

Open Source Collections

1.Apache
2.JBoss
3.WebWork
4.SourceForge
5.Google Code
6.eclipse
7.http://www.opensymphony.com/osworkflow/
8.http://openjdk.java.net/
9.http://kenai.com/projects/swing2
10.http://www.tigris.org/servlets/ProjectList?type=Projects
11.http://www.ow2.org/
12.http://www.roseindia.net/opensource/
13.http://www.mcqueeney.com/java/tools.jsp
14.http://www.together.at/
15.http://www.javaforge.com/project/11

a.http://www.manageability.org/blog/opensource/topic_view
b.http://java-source.net/
c.http://www.java-opensource.com/
d.http://www.open-open.com/
e.http://oreilly.com/pub/q/java_os_directory
f.http://theopensourcery.com/javaopens.htm
g.http://best-java-source.whyandhow.org/
h.http://www.open001.com/listProjects_subTitleId_12.html
i.http://www.java2s.com/Open-Source/Java/