- All lines must be terminated with a line feed character (LF, ASCII value 10) and not for instance CR or CR+LF.
- There may be no trailing white space at the end of a line.
- The name of a source file must equal the name of the class it contains followed by the
.java
extension, even for files that only contain a package private class. This does not apply to files that do not contain any class declarations, such as package-info.java
.