https://www.youtube.com/watch?v=fhIDPeZ1sEM&t=2s package method; import java.io.FileWriter; import java.io.IOException; public class Whymethod_1 { public static void main(String[] args) throws IOException { System.out.println("--start--"); FileWriter fw = new FileWriter("out.txt"); // txt파일에 글씨출력하여 out.txt로 저장 fw.write(twoTimes("a", "*")); fw.close(); System.out.println("--end--"); //Email.send(..