Select a design pattern and create a class diagram for your two problems (please create two separate posts uploading only a screen-capture of the image --- e.g. JPEG or PNG --- to the post)

1. A stock tracking site needs to provide a capability for company information to be retrieved from a database given a stock ticker (e.g. LMT). There is significant data associated with a company class and these retrievals will transpire repeatedly by the consuming client -- sometimes accessing the same company.

2. A legacy interface (LegacyAPI) needs to be converted to the newer interface. (NewAPI)