Accidentally I delete project “.settings” folder from directory where located Java project.
In this directory were located files like:
org.eclipse.jdt.core.prefs
org.eclipse.m2e.core.prefs
org.eclipse.wst.common.project.facet.core.xml
etc..
Can I restore them? Now eclipse show error when methods marked with @Override annotation (Eclipse don’t understand that I implement some interfaces). It is not full list of errors.
Thanks!
Unless you have a backup or generating your Eclipse project settings from some build system you should manually set your project preferences again in Eclipse (open project properties and look through the settings).
E,g, the problem with annotations is incorrect Java version setting for compiler (you need java 1.6 or higher).
Maybe your project is very simple then you may create new project with appropriate settings and copy your sources from broken project to new one.
If you want to avoid similar situation with workspace settings you may export them and backup resulting file (see file/export/general/preferences).
It is usually very convenient to generate Eclipse project from build configuration (e.g. all Maven, Gradle, Leiningen can do this). This works well unless you need some specific settings in Eclipse project that are not yet supported by build system.