the System.out thing is Java itself https://docs.oracle.com/javase/specs/jls/se7/html/jls-17.html#jls-17.5.4 https://docs.oracle.com/javase/specs/jls/se7/html/

the System.out thing is Java itself https://docs.oracle.com/javase/specs/jls/se7/html/jls-17.html#jls-17.5.4 https://docs.oracle.com/javase/specs/jls/se7/html/jls-17.htm... given this it's not surprising others thought it was acceptable also