https://issues.dlang.org/show_bug.cgi?id=13522
--- Comment #5 from [email protected] --- There are plans to totally disallow the use of "_" as variable name in Java: http://openjdk.java.net/jeps/213 >In addition, using underscore ("_") as an identifier, which generates a >warning as of Java SE 8, should be turned into an error in Java SE 9.< --
