问题
How can one get the backed up file from an old jb_bak or jb_old intellij file. I recently found the jb_bak of a deleted file(.java) which wasn't recoverable using Local History how can I get this file back to its original state from the jb_bak
回答1:
Just change the extension of the file to the required one. If it is a backup of .java, changing the extension to .java should work.
These files are produced by safe write, when IntelliJ first saves contents to a temp file and then renames it.
回答2:
How I finally solved it: wasn't able to recover the original file from the jb_bak or jb_old though. I downloaded easus data recovery wizard
and specified my project's jar production in order to recover the deleted class outputs(since my src class files were overwritten already) i.e.
C: \ IdeaProjects \ Yuppies \ src \ main \ resources \ Jars \ out \ production \ Jars \ yars \ ...
Yars was the folder containing my classes @src
For anyone who runs into this similar problem you may want to try checking the following paths as it applies for your project(my project's name was Yuppies ) if the above doesn't work or if you want to compare results above with these so you can get the copy of your file with the largest size/the most recent update:
C:\IdeaProjects\
Yuppies\target\classes\Jars\out\production\Jars\yars\ ...
OR
C:\IdeaProjects\
Yuppies\target\classes\yars\ ...
If that doesn't work try checking if intellij built a jar of the original class @
C:\IdeaProjects\
Yuppies\target\classes\Jars\out\artifacts\ ...
and see if you can decompile the jar file.
来源：https://stackoverflow.com/questions/54047457/how-do-you-restore-from-a-old-jb-bak-or-jb-old-file