Programming with JViews Maps > Introducing the Main Classes > Raster Image Management > Persistence of Images

The base reader is made persistent through the implementation of the IlvPersistentObject interface. This implies implementing a specific constructor (to retrieve data from an input stream) and writing methods.

To manage dataless persistence, it is also necessary to implement a reload method, able to read the raw files from serialized information (such as file names), see Writing a Raster Reader for DEM Data.