ls_sql="delete from crm_jdxmmx ";
    ls_sql+=" where jdjlh='"+jdjlh+"'";
    ps= conn.prepareStatement(ls_sql);
    ps.executeUpdate();
    ps.close();

    int row=0;
    for (int i=0;i<jdxmbm.length ;i++ )
    {
        if (jdrybh[i].trim().equals(""))
        {
            continue;
        }

        row++;

提示我  java.lang.NullPointerException