Why do my java files look strange in Eclipse?

Question

I just got confused with my Eclipse project, the java code file appears strange like this:

It should be look like this:

Does anyone know what is the difference of those java file? And how do I resolve this problem? Thanks and regards.

Answer 1

I know this is a little late, but i had the same problem and couldn't run anything, so I did some research and found the problem was as said by Sergey, I fix it by right clicking in the Project > Build Path > Configure Build Path > Source then deleting the source path and adding the new source path, the project location. Hope it works, it worked for me

Answer 2

It's related to how Package Explorer is showing the project content. The second one (solid blue J icon) shows Java source code while the first one shows just a folder structure with any files in it (Java files in this case). Meaning that if you fail to see the second one then your project is in trouble since there's no source code folder configured.

You could check you project sources by right click on project > Java Build Path > Source

If you want to avoid confusion then I'd recommend to use the Navigator view over the Package Explorer view cause the former shows your folder structure as it is w/o any modifications.