java 连接 sap

源代码：
 import com.sap.mw.jco.*;
public class control extends Object
{
public static void main (String str[])
{
 control control=new control();
}
int count;
JCO.Client mConnection;
JCO.Repository mRepository;
String[] SAPInterfaces;
public control()
{
   try {
    // Logon info
     mConnection = JCO.createClient("110", // SAP client
                                     "", // userid
                                       "", // password
                                          "zh", // language
                                 "", // application server host name
                                            ""); // system number
    mConnection.connect();
    mRepository = new JCO.Repository("ARAsoft", mConnection);
    System.out.println("SAP连接成功");
   } catch (Exception ex) {
    ex.printStackTrace();
    System.exit(1);
   }
   JCO.Functio