Chapter31 (v4) Using Scala from Java: Singleton objects
Chapter31 (v5) Using Scala from Java: Traits as interfaces
Chapter31 (v6) Annotations: Deprecation
Chapter31 (v7) Annotations: Volatile fields
Chapter31 (v8) Annotations: Serialization
Chapter31 (v9) Annotations: Exceptions thrown
Chapter31 (v10) Annotations: Java annotations
Chapter31 (v11) Existential types
Chapter31 (v12) Using synchronized