When a file (.java for example) is open in Eclipse, how do I get the Package Explorer to show the file that I am working on?
When a file (.java for example) is open in Eclipse, how do I get the Package Explorer to show the file that I am working on?
From this site:
How to use Show In functionality from the popup menu
Press Alt+Shift+W while you’re in an editor. This pops up a menu with a number of choices. The choices will vary depending on what plugins you have installed. Select the option you want and press Enter.
The fastest way to select an option is to use the first letter of the option, eg. to go to the Package Explorer, press P (you may have to do this 2 or 3 times depending on how many other options start with P). The press Enter. You could also use the arrow keys.

Invoke "Show In" faster with a keyboard shortcut
If you frequently use one of the options (eg. Package Explorer), you can map a single keyboard shortcut to invoke it.
Always link active source file with package explorer
If you like this feature, you can open the package editor and click on the double yellow arrows to always show the currently selected source file in the package explorer.
Above project explorer window you will see the below image in the red circle , just clicked on this one mean when clicked any file in the project will showing you in project explorer.
If you want to show only one file you can
1 - Click right on the file .
2 - Select show-in .
3 - Select show in project explorer .
4 - Done.
The below image explain more about it .