A development tool to help programmers write Java code that adheres to a coding standard. By default it supports the Sun Code Conventions, but is highly configurable. [Open source, LGPL]

A source code formatter for Java. It layouts source code according to some widely configurable rules, to meet a certain coding style without putting a formatting burden on individual developers. [Open source, GPL]

Configurable source code formatter and style checker. Commercial successor of the Open Source Jalopy.

A source code formatter for Java with custom coding style support. [Commercial]

Utility to neaten up import statements in a source files. [LGPL]

Free configurable Java code beautifier, which supports the widely used Java coding conventions from Sun Microsystems. [Freeware]

A source code beautifier for java. [Freeware]

Sourcecode formatter and beautifier for Java files. [Freeware]