Where are my java projects?

The question is: what eclipse I used to import a java project?

After years and years of tests, developments, new projects, new versions of eclipse, I’m in the situation of opening the folder in which all my projects are present but not remembering which version of eclipse they were imported with. And so the other day I asked myself, how do I know, given a java project, which version of eclipse¬† did I use? This without opening eclipse … obviously. The answer is as follows: for each eclipse workspace, just look in the folder

${eclipse_workspace}\.metadata\.plugins\org.eclipse.core.resources\.projects

Got it!