But today I have great news for all of them. I found great Eclipse plugin. After installation you can simply mark line of code with Alt+Number and quickly go back to marked place with Alt+Shift+Number combination. Glory!!!
- You can change keys combination
- It works across Eclipse workspace
- It doesn't affect built in Eclipse bookmarks functionality
Eclipse update page: http://eclipse.etc.to/updates/
After installation you have to restart Eclipse to get it work (at least Eclipse 3.2)