Packages 
Package Description
play
Provides the Play framework's publicly accessible Java API.
play.cache
Provides the Cache API.
play.data
Provides data manipulation helpers, mainly for HTTP form handling.
play.data.format
Provides the formatting API used by Form classes.
play.data.validation
Provides the JSR 303 validation constraints.
play.db
Provides the JDBC database access API.
play.db.ebean
Provides Ebean ORM integration.
play.db.jpa
Provides JPA ORM integration.
play.filters.csrf  
play.http  
play.i18n
Provides the i18n API.
play.inject  
play.libs
Provides various APIs that are useful for developing web applications.
play.libs.oauth  
play.libs.openid  
play.libs.ws  
play.libs.ws.ning  
play.mvc
Provides the Controller/Action/Result API for handling HTTP requests.
play.server  
play.test
Contains test helpers.