# Package org.python.core.util

- Class Summary
  Class | Description
  --- | ---
  ByteSwapper | Simple class that provides the capability to swap or reverse the byte order of all elements of an `Array`.
  ExtraMath | A static utility class with two additional math functions.
  FileUtil | Utility methods for Java file handling.
  importer<T> | A base class for PEP-302 path hooks.
  LimitedCache<K,V> | Not for application use, a cache of recently given results from some costly function.
  PlatformUtil | Methods for testing the platform/operating system that we are on.
  RelativeFile | A java.io.File whose initial path is resolved relative to the current SystemState's current working directory.
  StringCounter | Not for application use, this class may be used to count how many times a `String` occurs a point in the runtime.
  StringUtil | String Utility methods.

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