Java – eclipse (using J2EE plug-ins) does not build class files into the output directory

I have several versions of eclipse that have this problem In some cases, eclipse does not output bytecode class files to the output directory I will do a building and clean I am using Tomcat server I stopped the server, but eclipse still won't do a build

My output directory: project / webcontent / WEB-INF / classes

Sometimes, after so many builds and / or reboots, I can build to that directory again Do you know what the problem is?

In addition, what is the best way to create an error report for this problem?

Version information: Galileo eclipse Java EE IDE for web developers Build id：20100218-1602

In addition, the MVN m2eclipse plug-in is installed

Solution

This usually happens if the project build path is missing some required libraries Also make sure that the check is automatically created [project > auto build] If you still have problems, please post