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ThisCode Conventions for the Java Programming Language document contains the standard conventions that we at Sun follow and recommend thatothers follow. It covers filenames, file organization, indentation,comments, declarations, statements, white space, naming conventions,programming practices and includes a code example.

• 80% of the lifetime cost of a piece of software goes to maintenance.
• Hardly any software is maintained for its whole life by the original author.
• Code conventions improve the readability of the software, allowing engineers to understand new code more quickly and thoroughly.

The Code Conventions for the Java Programming Language document was revised and updated on April 20, 1999.