How do I run a single Java file having main() in Eclipse, without creating an entire Java project?

Question

Here\'s what I\'ve got:

1. I have a TestFile.java with the same class name.
2. This class has a valid main() method.
3. The file

Answer 1

You can do that in any Eclipse project with org.eclipse.jdt.core.javanature (check/edit .project file).

So just open .project file and add

    org.eclipse.jdt.core.javanature

if it is not yet there.