How to execute .bat file through java?

Question

I already create a batch file to pull & push file. Now, i want to execute this .bat file java.I got this example but it doesnt work. Did i missed something or do we have the better one?
import java.lang.*;
import java.io.*;
public class Loadfile
public static void main(String args[]) throws IOException
Runtime load = Runtime.getRuntime();
r.exec("C:\\pull.bat");
}

Answer 1

For Runtime,i'd change it to:
Runtime load = Runtime.getRuntime();
        String cmd = "C:\\javaclass\\copytemp.bat";
        Process proc = load.exec(cmd.toString());Is it right? But still can't work.
Here is the .bat file:
@echo off
c:
cd "c:\Inetpub\ftproot\Debitin"
C:\Inetpub\ftproot\Logrecord\pullscript.txt echo open localhost
C:\Inetpub\ftproot\Logrecord\pullscript.txt echo Administrator
C:\Inetpub\ftproot\Logrecord\pullscript.txt echo password
C:\Inetpub\ftproot\Logrecord\pullscript.txt echo cd ftpScript
C:\Inetpub\ftproot\Logrecord\pullscript.txt echo binary
C:\Inetpub\ftproot\Logrecord\pullscript.txt echo lcd C:\
C:\Inetpub\ftproot\Logrecord\pullscript.txt echo lcd "C:\Inetpub\ftproot\infile"
C:\Inetpub\ftproot\Logrecord\pullscript.txt echo prompt n
pause
C:\Inetpub\ftproot\Logrecord\pullscript.txt echo mget *.txt::@rem >> C:\Inetpub\ftproot\Logrecord\pullscript.txt echo mdel *.*
C:\Inetpub\ftproot\Logrecord\pullscript.txt echo byeftp.exe -s:C:\Inetpub\ftproot\Logrecord\pullscript.txt
::del C:\Inetpub\ftproot\Logrecord\pullscript.txt
pause
exit
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