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copied!<p>I've never used Eclipse to develop in JAVA, but if you are asking about a graphical debugger that allows to set up breakpoints, go through the current stack trace, see content of variables, and all that, there is (at least one) a solution:</p> <p>You can use the <a href="http://xdebug.org/" rel="noreferrer">Xdebug</a> extension, and <a href="http://eclipse.org/pdt/" rel="noreferrer"><strong>Eclipse PDT</strong></a> as IDE : the second one is able to use the first one as debugger, and provides an interface for it -- kind of what you might expect if you have used a visual debugger in other languages/IDE.</p> <p>I've used this combination a couple of times with Drupal, to see what was executed, in which order, how, and all that <em>(not easy to get "by hand", with the hooks mecanism)</em>, and it definitly works pretty well.</p> <p>There are tutorials available on the net that explain how to setup both of those to get the debugger working. For instance :</p> <ul> <li><a href="http://robsnotebook.com/php_debugger_pdt_xdebug" rel="noreferrer">How To Setup a Free PHP Debugger using Eclipse PDT + XDebug</a></li> <li><a href="http://echodittolabs.org/drupal-xdebug-pdt-eclipse" rel="noreferrer">Setting up Eclipse to Debug Drupal with XDebug</a> <em>(unfortunatly, the screenshots are missing)</em></li> <li>Or (in french, but with screenshots ; so, might be helpful evn if not easy to understand) : <ul> <li><a href="http://blog.wampserver.com/index.php/2009/08/28/debugger-avec-wampserver-xdebug-et-pdt/" rel="noreferrer">Débugger avec WampServer, Xdebug et PDT</a></li> <li><a href="http://blog.christophelebot.fr/2008/11/02/configurer-xdebug-eclipse-pdt-serveur-test-distant/" rel="noreferrer">Configurer Xdebug pour Eclipse PDT en utilisant un serveur de test distant</a></li> </ul></li> </ul> <p><br> And here is a screenshot of what it can look like <em>(here, I've set a breakpoint somewhere is the backoffice of Dotclear)</em> :</p> <p><a href="http://extern.pascal-martin.fr/so/eclipse-xdebug-debug-1.png" rel="noreferrer"> http://extern.pascal-martin.fr/so/eclipse-xdebug-debug-1.png </a></p> <p><em>(In theory, clicking on the image should get you to a bigger version)</em></p> <p><br> The icons on top of the windows will allow you to do stuff like :</p> <ul> <li>step by step</li> <li>step in / out of functions / methods</li> </ul> <p>And you can also</p> <ul> <li>see the content of variables <em>(top right of the screenshot)</em></li> <li>have a stack trace showing where you are <em>(top left of the screen shot)</em></li> <li>of course, see were you are in the code <em>(bottom)</em></li> </ul> <p><br> I've also heard that Eclipse PDT can use the Zend Debugger extension instead of Xdebug ; but I've never tried this one.</p>

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