What are *.snap files in eclipse?

I have so many projects in workspace. for every one or two weeks i have to search for *.snap file delete them. otherwise my eclipse will take lot of time to come up? So curious to know what are they? are they specific to java? as i have lots of java projects in my workspace?

Where is .snap file in eclipse?

snap file in my . metadata/. plugins/org. eclipse.

How do I prevent Eclipse on hanging on startup?

" Windows -> Preferences -> General -> Startup and Shutdown -> Refresh workspace on startup" seems to be a workspace-related setting and so I couldn't change it for the workspace that was causing the hang. Running eclipse with the command line parameter -refresh and then changing the setting seems to do the trick.

*.snap files represent the changes in workspace state of the IDE during the runtime. This is mostly for eclipse crash recovery plan. When a crash happens these files are used to recover the state fo eclipse workspace.