Support multi language params. Fix Java hashcode param.

### Java Lang Param `hashcode` Typo
Correct a typo in the Java hashcode parameter.
_hahscode_ -> _hashcode_.

### Multi-parameter Support
Current state allows for zero or one parameter to be defined: `java` or `java:private-methods`

This patch adds support for multiple parameters using a comma to separate the parameters. Ex: `java:private-methods,hashcode,nocamel`