# Uses of Package
org.apache.poi.poifs.nio

- Packages that use org.apache.poi.poifs.nio
  Package | Description
  --- | ---
  org.apache.poi.poifs.filesystem | filesystem package maps OLE 2 Compound document files to a more familiar filesystem interface.
  org.apache.poi.poifs.nio |

- Classes in org.apache.poi.poifs.nio used by org.apache.poi.poifs.filesystem
  Class and Description
  DataSource Common definition of how we read and write bytes

- Classes in org.apache.poi.poifs.nio used by org.apache.poi.poifs.nio
  Class and Description
  CleanerUtil.BufferCleaner Pass in an implementation of this interface to cleanup ByteBuffers.
  DataSource Common definition of how we read and write bytes

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