ftp vs sftp in JAVA

[ndedhia1]

I was hoping you could help me out with ftp vs sftp.
Below is a method that I have that I call to ftp files from one unix box
to another in house, but soon, we will have to ftp from here to NY so we
have to start using sftp. I know that we have open ssh on our unix
boxes but was wondering how different the syntax would be, going from
ftp to sftp.


Here is a method that I have written in my java code for ftping a file
to a specific location.
How can I change this so that it will sftp instead of ftp?
Do I need to change this line frome ftp to sftp and thats it:
URL("ftp://"+user+":"+pass word+"@"+host+" .sbc.com:21/%2F"+remoteDirF ile

[code=java]
ftpFile("upload ","login","pass wd","unixbox",r emote,"",m_spre adName,"i");
[/code]

[code=java]
private void ftpFile(String actionType,Stri ng user,String
password,String host,String remoteDirFile,S tring remoteFILE,Stri ng
localeFile,Stri ng modeType)
{
//modeType='a' for ascii || 'i' for binary

if(actionType.e qualsIgnoreCase ("download") ) ///Download a file
{
try
{
URL url = new
URL("ftp://"+user+":"+pass word+"@"+host+" .sbc.com:21/%2F"+remoteDirF ile
+";type="+modeT ype);

URLConnection conn = url.openConnect ion();

PrintWriter ot = new PrintWriter(new FileWriter(loca leFile));
BufferedReader in = new BufferedReader( new
InputStreamRead er(conn.getInpu tStream()));
String line="";

while((line = in.readLine()) != null)
{
ot.println(line );
}

ot.close();
in.close();

}
catch (MalformedURLEx ception m)
{
System.out.prin tln(" Error: "+m);
}
catch (IOException ioe)
{

System.out.prin tln(" Error: "+ioe);
String weekDay = convertToValidW eekDay(determin eValidWeekDay(( new GregorianCalend ar().get(Calend ar.DAY_OF_WEEK + day--))));

if(day < -7)
{
System.out.prin tln(" No valid file(s) to "+actionTyp e);
}

String remoteDirFile2= "/production/"+weekDay+"/dir2/"+
remoteFILE;

//ftpFile(actionT ype,user,passwo rd,host,remoteD irFile2,remoteF ILE,locale File,modeType);
}
}
else if(actionType.e qualsIgnoreCase ("upload")) ///Upload a file;
Only binary files
{
try
{
URL url = new
URL("ftp://"+user+":"+pass word+"@"+host+" .sbc.com:21/%2F"+remoteDirF ile
); //'a' for ascii and 'i' for binary

URLConnection conn = url.openConnect ion();
OutputStream os = conn.getOutputS tream();
BufferedInputSt ream bis = new BufferedInputSt ream(new
FileInputStream (localeFile));
int number;

while((number = bis.read()) != -1)
{
os.write(number );
os.flush();
}

os.close();
bis.close();

}
catch (MalformedURLEx ception m)
{
System.out.prin tln(" Error: "+m);
}
catch (IOException ioe)
{
System.out.prin tln(" Error: "+ioe);
}
}
}
[/code]

[ndedhia1]

I switched the line to read:


[code=java]
URL("sftp://"+user+":"+pass word+"@"+host+" .sbc.com:21/%2F"+remoteDirF ile);
[/code]

fyi..i switched the ftp:// to sftp://..

and it jumps to this exception:

Error: java.net.Malfor medURLException : unknown protocol: sftp



Am I missing some import statements at the top or something?



This is in the JavaDocs:

Protocol handlers for the following protocols are guaranteed to exist on the search path :-

http, https, ftp, file, and jar


How Do I get sftp to be known as a known protocol?