public class smb {
 
      /**
      * @param args
      * @throws IOException
       */
      public static void main(String[] args) throws IOException {
            // TODO Auto-generated method stub
     
 
          String urlToBackUpFile = "smb://ip/backup$/test.txt";       //"smb://yourhost/yourpath/";
          System.out.println("Это smb папка в которую стучимся " + urlToBackUpFile);
          NtlmPasswordAuthentication auth = new NtlmPasswordAuthentication(null, "login", "pass");
          SmbFile dir = new SmbFile(urlToBackUpFile, auth);
          System.out.println(dir.length() + " " + dir.getName()); // это показывает
           
                   
                       
            InputStream in = new SmbFileInputStream(urlToBackUpFile);
            System.out.println(in);     
            OutputStream out = new FileOutputStream("С://SQLRESTORESTAGE//1.dat");
            byte[] buffer = new byte[16904];
            int read = 0;
            while  (in.read(buffer) > 0 ) ;
            {
                        out.write(buffer, 0, read);                   
                        System.out.println("записали");
            }
            in.close();
            out.close();
      }
}

InputStream in = new FileInputStream("U://test.txt");  // примонтированный диск
		System.out.println("Тест");		
		OutputStream out = new FileOutputStream("С://SQLRESTORESTAGE//1.dat"); 
		byte[] buffer = new byte[16904]; 
		int read = 0; 
		while  (in.read(buffer) > 0 ) ; 
		{
		        	out.write(buffer, 0, read);				 
		        	System.out.println("записали");
		}
		in.close(); 
		out.close(); 

public static void main(String[] args) throws IOException {

		File src = new File ("U://test.txt");
		File des = new File ("С://SQLRESTORESTAGE//1.dat");
		InputStream in = new FileInputStream(src);
		OutputStream out = new FileOutputStream(dest);
	
		System.out.println("Тест");		

		byte[] buffer = new byte[1024]; 
		int read = 0; 
		while ((read = in.read(buffer)) > 0)  
		{
		        	out.write(buffer, 0, read);				 
		        	System.out.println("записали");
		}
		in.close(); 
		out.close(); 
		}

Exception in thread "main" java.io.FileNotFoundException: С:\SQLRESTORESTAGE\1.dat (The system cannot find the path specified)
	at java.io.FileOutputStream.open(Native Method)
	at java.io.FileOutputStream.<init>(Unknown Source)
	at java.io.FileOutputStream.<init>(Unknown Source)
	at smb.main(smb.java:44)

public static void main(String[] args) throws IOException {
		File src = new File ("U://test.txt");
		File dest = new File ("С://SQLRESTORESTAGE//1.dat");
		dest.getParentFile().mkdirs();
		InputStream in = new FileInputStream(src);
		OutputStream out = new FileOutputStream(dest);
		System.out.println("Тест");		
		 
		byte[] buffer = new byte[1024]; 
		int read = 0; 
		while ((read = in.read(buffer)) > 0)  
		{
		        	out.write(buffer, 0, read);				 
		        	System.out.println("записали");
		}
		in.close(); 
		out.close(); 
	}

Exception in thread "main" java.io.FileNotFoundException: С:\SQLRESTORESTAGE\1.dat (The system cannot find the path specified)
	at java.io.FileOutputStream.open(Native Method)
	at java.io.FileOutputStream.<init>(Unknown Source)
	at java.io.FileOutputStream.<init>(Unknown Source)
	at smb.main(smb.java:46)

xcopy /?

xcopy /?

Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.

H:\>xcopy U:\test.txt c:\sqlrestorestage
U:\test.txt
1 File(s) copied

H:\>