Coding Standards for Java
- Comprehensive coding and style guidelines from AmbySoft Inc.
- http://www.ambysoft.com/essays/javaCodingStandards.html

How To Write Unmaintainable Code
- A humorous approach emphasizing the need for coding standards - Java centric discussion.
- http://www.mindprod.com/jgloss/unmain.html

Java Programming Style Guidelines
- A set of recommendations on various aspects of coding such as naming, file organization, and comments.
- http://geosoft.no/development/javastyle.html

Tips for maintainable Java code
- A random collection of personal observations by Rolf Howarth.
- http://www.squarebox.co.uk/download/javatips.html

The Infospheres Java Coding Standard
- Discusses structure, documentation, naming conventions. Also discusses useful related tools.
- http://www.infospheres.caltech.edu/resources/code_standards/java_standard.html

How to Write Doc Comments for the Javadoc tool
- "Official" JavaDoc style guidelines from Sun Microsystems.
- http://java.sun.com/j2se/javadoc/writingdoccomments/index.html

Code Conventions for the Java Programming Language
- Coding Guidelines from Sun Microsystems.
- http://java.sun.com/docs/codeconv/

A Programming Style for Java
- A large number of heuristic guidelines for writing well-structured and maintainable Java programs.
- http://www.webcom.com/~haahr/essays/java-style/

Java Coding Standards
- Collection of links Ray Ontko.
- http://www.ontko.com/java/java_coding_standards.html

Draft Java Coding Standard
- Guidelines for structure, documentation and naming.
- http://gee.cs.oswego.edu/dl/html/javaCodingStd.html