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There are several issues with viewing javadoc in netbeans 6 M10: 1. The internal swing based html viewer (which was very handy) is no longer available. 2. The Tools>Options>General menu does not list all possible web browsers. On my system konqueror is missing. 3. I did not find a way to configure the "Default System Browser". 4. Javadoc is not displayed for all classes. For example "Set" works, "String" doesn't.
Available browsers are handled by the extbrowser module. Reassigning. Please file a separate issue (javadoc module) for 4) since it is unrelated to previous ones. Add steps what you did to display javadoc (code completion, search/view javadoc action, ...?).
1) See http://www.netbeans.org/issues/show_bug.cgi?id=87648 2) We are not able to find all the possible web browsers available in the system, we are trying to cover the most commonly used ones (IE, Firefox). I know we often don't recognize any standard web browsers on Linux. 3) "Default System Browser" is delegating to some platform/jvm specific system call (e.g. /usr/bin/open on OS X, until recently Desktop.browse() when running on JVM 6) and there are no options to configure it Note that it is possible to configure external browser of your choice by selecting "External Browser (command line)" in the "General" configuration tab and specifying the command line in "Advanced Options->IDE Configuration->Server and External Tool Settings->Web Borwsers->External Browser (command line)"
I just tried to configure the external web browser (Advanced Options->IDE Configuration->Server and External Tool Settings->Web Browsers->Default System Browser->Browser Executable) but the browser executable I entered is not stored. After closing the property dialog where I entered the command line in the "Process" field the "Browser Executable" field remains empty.