public JavaWriter emitPackage ( String packageName ) throws IOException { if ( this . packagePrefix != null ) { throw new IllegalStateException ( ) ; } if ( packageName . isEmpty ( ) ) { this . packagePrefix = "" ; } else { out . write ( "package " ) ; out . write ( packageName ) ; out . write ( ";\n\n" ) ; this . packagePrefix = packageName + "." ; } return this ; }
Emit a package declaration and empty line .