Error compiling Java code: requires class, interface or enum hint

This error occurs: A class, interface, or enum hint is required, generally in two cases:

1. The code is incorrectly written;

2. There is a problem with the Encoder selection encoding format. ( mainly in non-Notepad to write code files, there is an encoding format conversion problem.) )

such as the error message, we can see that the encoding format caused by the error, the solution is to modify the encoding format, General choice UTF-8 No BOM format encoding, will solve the problem.

Error compiling Java code: requires class, interface or enum hint