Immutables

Java annotation processors to generate simple, safe, and consistent value objects. Do not repeat yourself, try Immutables, the most comprehensive tool in this field. With Immutables you can generate state-of-the-art immutable objects and builders. Type-safe, null-safe and thread-safe, with no boilerplate. Generate builders for immutable objects and even plain static factory methods. Just add jar to classpath and use. No required runtime dependencies! Guava is supported, but not required. Works out-of-the-box with build tools, integrates into IDEs. Lazy, derived and optional attributes. Comprehensive support for collections as attributes, including Guava collections. Generic parameters. Copy with structural sharing. Singleton and interned instances.