Eclipse Mars：代码不见了

Question

Please, help! I opened Eclipse Mars to continue coding and my code is gone! I don't know what could have caused this but it's all gone. Does anyone have any idea what can I do?

Note: I tried to right-click the java file->Replace With->Previous from local history. But a message says "No local history available for selected resource". Is there any other way?

Thank you in advance!

Answer 1

The first step in debugging this problem is to find out if the code is still exists without using Eclipse. Several possibilities come to mind:

1. The code is still where you expect, the files exist and the content is OK.
2. The code is still where you expect, the files exist, but the files are empty.
3. The workspace directory does not exist any more.

You need to use a file explorer program to find the files and check they are not empty. Try opening them with Notepad++ or similar. If you are lucky, option 1 will be the answer, and Eclipse has got confused. Just use File/Switch Workspace to set the workspace to the directory and all should come right.

Options 2 & 3 indicate you have lost data. There is probably little chance of recovery. Revert to your backups (you do have them?). Otherwise learn a lesson and set up a GIT or SVN server (or subscribe to a cloud service). I just use a very old laptop running Ubuntu with SVN server installed.

As a side issue, Eclipse does not randomly delete or empty files. There are millions of developers world-wide using Eclipse, and if it existed, such behavior would be all over the internet.

Answer 2

I had the same problem and found my file with a strange name in local history with this path:

".metadata/.plugins/org.eclipse.core.resources/.history/"

It was not the last version but better than nothing :)