JAVA: Common basic style errors.

Nothing new - just to remember (found in some old txt file)

• classes too long
• methods too long
• little or no javadoc
• no convention for distinguishing between local variable, arguments and fields
• many empty catch books that suppress exception
• inappropriate use of multiple return statements
• using exception to define regular program flow
• excessive use of the instance of operator
• using floating point data to represent money
• preferring arrays over collections
• not ordering class members by scope