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Don't create your own "decorated" private data member names
This is usually seen in the form of prepended underscores and characters. Hungarian notation is the worst example of this, where you attach extra characters that indicate data type, use, location, etc., as if you were writing assembly language and the compiler provided no extra assistance at all. These notations are confusing, difficult to read, and unpleasant to enforce and maintain. Let classes and packages do the name scoping for you.
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Follow the Sun coding conventions
Use "get," "set," and "is" 
Standardize! 
Make iterative testing of classes easy 
Follow standard capitalization rules
Avoid inheritance 
Don't create your own "decorated" private data member names 
Don't overuse finalization 
Follow a canonical form 
Use nested classes 
Eckel's Ten Java Maxims for Good Design
