When you put the cursor inside the erroneous package declaration and press ctrl-1,
you should get a list of quick fixes, one of which is "Move 'classname' to package 'packagename'". What happens if you execute it?
The soul is dyed the color of its thoughts. Think only on those things that are in line with your principles and can bear the light of day. The content of your character is your choice. Day by day, what you do is who you become. Your integrity is your destiny - it is the light that guides your way. - Heraclitus