SMC helps you capture your state diagram in an easy to understand language and generates the State pattern classes for you.
'net.sf.smc:smc:4.3'
<dependency>
<groupId>net.sf.smc</groupId>
<artifactId>smc</artifactId>
<version>4.3</version>
</dependency>
<dependency org="net.sf.smc" name="smc" rev="4.3"/>
"net.sf.smc", "smc", "4.3"