# Package org.apache.felix.utils.properties

Interface Summary
InterpolationHelper.SubstitutionCallback: Callback for substitution
TypedProperties.SubstitutionCallback

Class Summary
ConfigurationHandler: The `ConfigurationHandler` class implements configuration reading form a `java.io.InputStream` and writing to a `java.io.OutputStream` on behalf of the `FilePersistenceManager` class.
InterpolationHelper: Enhancement of the standard `Properties` managing the maintain of comments, etc.
InterpolationHelper.BundleContextSubstitutionCallback
Properties: Enhancement of the standard `Properties` managing the maintain of comments, etc.
Properties.Layout: TODO
Properties.PropertiesReader: This class is used to read properties lines.
Properties.PropertiesWriter: This class is used to write properties lines.
TypedProperties: Map to load / store / update untyped or typed properties.