java - I cannot find the error -

i following tutorial here , have been trying working 2 days now. error message when compiling filedata.

filedata.java:13: error: cannot find symbol           readfile file = new readfile(file_name);           ^    symbol:   class readfile    location: class filedata  filedata.java:13: error: cannot find symbol           readfile file = new readfile(file_name);                               ^    symbol:   class readfile    location: class filedata 

any assistance appreciated.

the code follows:

package textfiles; import java.io.ioexception;   public class filedata {     public static void main(string[] args) throws ioexception     {         string file_name = "c:/test.txt";          try         {             readfile file = new readfile(file_name);             string[] arylines = file.openfile();              int i;             (i=0; < arylines.length; i++)             {                 system.out.println(arylines[i]);             }         }          catch (ioexception e)         {             system.out.println( e.getmessage() );          }      } }   package textfiles;  import java.io.ioexception; import java.io.filereader; import java.io.bufferedreader;  public class readfile {      private string path;      public readfile (string file_path) //readfile method     {         path = file_path;     }      public string[] openfile() throws ioexception //openfile method     {         filereader fr = new filereader(path);         bufferedreader textreader = new bufferedreader(fr);          int numberoflines = readline();         string[] textdata = new string[numberoflines];          int i;          (i=0; < numberoflines; i++)          {             textdata[i] = textreader.readline();         }          textreader.close();         return textdata;     }      int readline() throws ioexception //readlines method     {         filereader file_to_read = new filereader(path);         bufferedreader bf = new bufferedreader(file_to_read);          string alines;         int numberoflines = 0;          while ((alines = bf.readline()) !=null)          {             numberoflines++;         }         bf.close();          return numberoflines;      } } 

the problem java compiler looking class file {readfile.class} inside folder textfiles follow compile,

1--> compile readfile using this

javac -d . readfile.java 

2--> compile filedata using this

javac -d . filedata.java 

note: purpose of

-d

is create appropriate packages during compilation.