Packages 
Package Description
com.oracle.coherence.io.json
JSON serializer implementation.
com.oracle.coherence.io.json.genson
This package contains Genson base classes, to start with have a look at Genson.
com.oracle.coherence.io.json.genson.annotation
This package provides useful annotations to configure some features used during serialization and deserialization.
com.oracle.coherence.io.json.genson.convert
This package provides some default Converter implementations and the chained factory and converter decorator mechanisms.
com.oracle.coherence.io.json.genson.datetime
JSON date and time classes.
com.oracle.coherence.io.json.genson.datetime.annotation
Json annotations.
com.oracle.coherence.io.json.genson.ext
This package contains features simplifying Genson integration into existing components.
com.oracle.coherence.io.json.genson.ext.jackson  
com.oracle.coherence.io.json.genson.ext.jsonb  
com.oracle.coherence.io.json.genson.ext.jsr353  
com.oracle.coherence.io.json.genson.reflect
This package contains the core api providing databinding support for complex objects.
com.oracle.coherence.io.json.genson.stream
This package provides the streaming api used to read and write to streams.
com.oracle.coherence.io.json.internal
Internal JSON packages.