A framework for a Java™ meteorological class hierarchy is proposed to implement object oriented applications in the atmospheric sciences. One of the reoccurring issues in the management and handling of enormous quantities of meteorological measurements is the formatting and processing of data from one application into other applications. For example, data received from various sources may need special formatting or unit conversions before the data can be properly inputted into a mesoscale model for initialization. The major components and functionality of the met class hierarchy will be discussed and a specific implementation of data processing using these classes will be demonstrated.