Error in Eclipse: "The project cannot be built until build path errors are resolved"

1. Identify "project navigator" or "package explorer" view.
   Right click on your project, select Build Path --> Configure build Path.

2. In the emerging window, you will find four tabs, select "Libraries".There, under "Web app libraries" (expand it), you will see the libraries added to the project's classpath. Check if all of them are available. If one or more are not (they'll have "missing" beside their name and a red mark on their icon), check if you need them (perhaps you don't); if you don't need them, remove it, if you need them, exit this window, look out for the missing jar and IMPORT it into your project.

1. Open the Problems view. You can open this view by clicking on the small + sign at the left hand bottom corner of eclipse. It's a very tiny plus with a rectangle around it. Click on it and select problems.

2. The problem view will show you the problems that need to be resolved.

   • If the message says "the project is missing the required libraries...", you need to configure your build path by right clicking on your project, selecting properties, then build path. Add the required jar files using the libraries tab. -If there are other problems other than missing libraries, you need to post the exact problems here to get a precise solution.

If you can't find the build path error, sometimes menu Project → Clean... works like a charm.