Exception error of "main" java.util.NoSuchElementException -

i have these below 2 classes , trying trying run app class can take command line arguments instead of having fixed file name in code

when execute code, following errors:

c:\javatest>java readfiletestapp resume.doc exception in thread "main" java.util.nosuchelementexception @ java.util.scanner.throwfor(unknown source) @ java.util.scanner.next(unknown source) @ readfile.getfile(readfile.java:26) @ readfiletestapp.main(readfiletestapp.java:8)

import java.io.file; import java.util.scanner; import java.io.filenotfoundexception;  public class readfile {        private string filename = "";       private long maxsize = 102400;        readfile(){};        readfile(string filename, long maxsize) {             this.filename = filename;             this.maxsize = maxsize;       }        public string getfile() throws filenotfoundexception {            file file = new file(this.filename);            if (file.exists()) {                   double filesize = file.length();                   if (filesize > this.maxsize) {                        return "file larger max size";                   } else if (filesize == 0) {                        return "file empty";                   } else {                       string filecontents =  new scanner(file).usedelimiter("\\z").next();                       return filecontents;            }            }else {                 return "file not found!";            }       } }   import java.io.filenotfoundexception;  public class readfiletestapp extends readfile {             public static void main(string [] args) throws filenotfoundexception {                readfile rf = new readfile(args[0], (long) 102400);               system.out.println(rf.getfile());        }  }