Developers use numerous tools, techniques, frameworks, and processes as they write, organise, build, test, and continuously improve applications. Sonar, a free and open source quality platform, makes it radically easier to track, manage, and enhance the overall quality of code. It uses respected tools like Findbugs, PMD, and Checkstyle, and implements well-established best practices to provide a full-featured, robust platform for code quality measurement, review, and remediation. Sonar in Action is a comprehensive guide that will show developers how to continuously improve their source code quality with simple, easy to follow examples of each of Sonar's core Seven Axes of Quality: design /architecture, duplications, comments, unit tests, complexity, potential bugs, and coding rules. Covers all aspects of Sonar Easy to follow examples Makes achieving quality code easy For developers who want a much easier way to manage code quality. Sonar is free software that analyses code to pinpoint problems that can occur when developers maintain, revise, and expand a program. Results are presented in a clean, intuitive Web interface that can even use graphs and charts.