public static ClassService getInstance()
{
if (instance == null)
{
instance = new ClassService();
}
if (classDao == null)
{
classDao = new ClassDao();
}
if (userClassDao == null)
userClassDao = new UserClassDao();
return instance;
}
public static UserService getInstance()
{
if (Bll==null)
{
Bll = new ImplUser();
}
if (instance == null)
{
instance = new UserService();
}
if (userDao == null)
{
userDao = new UserDao();
}
if (userClassDao == null)
{
userClassDao = new UserClassDao();
}
return instance;
}