Here are some development checklists for you to use when developing.

When you change Java code:

• jUnit tests - run using either Maven or Eclipse
• code formatting - run code formatting checker (CTRL+SHIFT+F in Eclipse)
• checkstyle - run using either Maven or Eclipse
• pmd - run using either Maven or Eclipse
• private build testing - to make a further confirmation, start the application you modified and access the feature you coded
• scalability - does your feature scale to handle large numbers of customers, orders, products and SKUs?
• domain objects - must be serializable
• acceptance testing - have the "customer" review the feature for completeness and accuracy

When you change Spring configuration files, OpenJPA mapping files, database schema or other configuration files:

• start the application you modified to see if anything is broken
• try to access the feature(s) affected by the file(s) you modified