try {
String[] kshCommand =
  {
    "/bin/ksh"
    ,"-c"
    ,"command"
    ,"command_arg1"
    ,"command_arg2" 
  };
java.lang.Process p = java.lang.Runtime.getRuntime().exec(kshCommand);

// deal with stdout, stdin and stderr of the child process using
// p.getInputStream();
// p.getOutputStream();
// p.getErrorStream();

// Now wait for the process completion
p.waitFor();
} catch (IOException ioe) {
}