java - Program that cannot acess input from a file -

i have program scans file , closes file.

import java.util.*; import java.io.*; public class filetester{  public static void main(string[] args) throws ioexception {      file test = new file("mydatta.in.txt");      scanner sf = new scanner(test);        sf.close();  } } 

when run program error message this:

exception in thread "main" java.io.filenotfoundexception: mydatta.in.txt (no such file or directory) @ java.io.fileinputstream.open(native method) @ java.io.fileinputstream.<init>(fileinputstream.java:120) @ java.util.scanner.<init>(scanner.java:636) @ filetester.main(filetester.java:6) 

i have mac runs on mac os. have reason believe has pathway file in documents. know in windows 1 use c:\folder name\file scan don't know mac , cannot find anywhere

you should put file path:

~/documents/mydatta.in.txt 

to tell java file in documents. ~ home folder.