Add-on datatype-support module for Jackson (http://jackson.codehaus.org) that handles Guava (http://code.google.com/p/guava-libraries/) types (currently mostly just collection ones)
'com.fasterxml.jackson.datatype:jackson-datatype-guava:2.0.0-RC2'
<dependency>
<groupId>com.fasterxml.jackson.datatype</groupId>
<artifactId>jackson-datatype-guava</artifactId>
<version>2.0.0-RC2</version>
</dependency>
<dependency org="com.fasterxml.jackson.datatype" name="jackson-datatype-guava" rev="2.0.0-RC2"/>
"com.fasterxml.jackson.datatype", "jackson-datatype-guava", "2.0.0-RC2"