JReach is a coverage tool that monitors the execution of a Java application to determine which lines are never executed. The lines that are never reached are written to a detail file. The percent coverage of each class and the entire application are written to a summary file. An XML file is created containing the summary and detail information and can be used for custom processing or viewed by a browser.

The following files were produced by running JReach against the sample CoverageTester.java:

CoverageTester-Detail.txt (tab-delimited file best viewed with a spreadsheet program)

Source File	LineNo	UnreachedLine
C:\src\com\branestorm\profiler\CoverageTester.java	26	{ int i = 1;
C:\src\com\branestorm\profiler\CoverageTester.java	47	{ System.out.println("This statement is never reached because first is not "
C:\src\com\branestorm\profiler\CoverageTester.java	48	+ "false");
C:\src\com\branestorm\profiler\CoverageTester.java	51	{ System.out.println("This statement is never reached because second"
C:\src\com\branestorm\profiler\CoverageTester.java	52	+ " is not "
C:\src\com\branestorm\profiler\CoverageTester.java	53	+ "true");

CoverageTester.xml (XML file that can be viewed in a browser using the provided XSL style sheet. View source to see the underlying XML.)

If you need a tool that does profiling, memory debugging, or thread analysis, then you will need to spend $500 or more for a competing product. However, if coverage is all you need, then JReach will do the job at a fraction of the cost. Try it now by clicking on the download button:

Download JReach Evaluation Version

To use JReach, your application must be compiled using SDK 1.4 or later, which you can download from http://java.sun.com

If you decide to purchase JReach, enter the following registration information and then click one of Buy Now buttons: