eclipse build problem

Question

when I try to build my Eclipse project, I get the following error message:

The type org.eclipse.swt.widgets.Composite cannot be resolved. It is indirectly referenced from required .class files

Can anybody help me to solve this problem? The Java-Build-Path contains the Plug-in-Dependencies-Library and org.eclipse.swt... is listed there.

I didn't have the problem last week (though nothing should have changed in the meantime). But it's not the first time that I get this typ of error...

Answer 1

Finally, I could solve the problem with creating a new workspace and importing my project.