executerEncoding inputEncoding

        and:
        file("src", "main", "java").mkdirs()
        file("src", "main", "java", "EchoEncoding.java").write """
            package echo;

            import java.nio.charset.Charset;

            public class EchoEncoding {
                public static void main(String[] args) {
                    System.out.println("default encoding: " + Charset.defaultCharset().name());