ADT Tree provides general purpose tree interfaces and implementations.
'de.topobyte:adt-tree:0.0.9'
<dependency>
<groupId>de.topobyte</groupId>
<artifactId>adt-tree</artifactId>
<version>0.0.9</version>
</dependency>
<dependency org="de.topobyte" name="adt-tree" rev="0.0.9"/>
"de.topobyte", "adt-tree", "0.0.9"