# Hierarchy For All Packages

Package Hierarchies:

- org.apache.datasketches.memory

## Class Hierarchy

- java.lang.Object
  - org.apache.datasketches.memory.DefaultMemoryRequestServer (implements org.apache.datasketches.memory.MemoryRequestServer)
  - java.lang.Throwable (implements java.io.Serializable)
    - java.lang.Exception
      - java.lang.RuntimeException
        - org.apache.datasketches.memory.BufferPositionInvariantsException
  - org.apache.datasketches.memory.XxHash

## Interface Hierarchy

- org.apache.datasketches.memory.MemoryRequestServer
- org.apache.datasketches.memory.Positional
  - org.apache.datasketches.memory.Buffer (also extends org.apache.datasketches.memory.Resource)
    - org.apache.datasketches.memory.WritableBuffer
- org.apache.datasketches.memory.Resource
  - org.apache.datasketches.memory.Buffer (also extends org.apache.datasketches.memory.Positional)
    - org.apache.datasketches.memory.WritableBuffer
  - org.apache.datasketches.memory.Memory
    - org.apache.datasketches.memory.WritableMemory