static String buildInsertSql(String table, String[] fields) {    // TODO:    StringBuilder sb = new StringBuilder("INSERT INTO ");    sb.append(table +" (");    for(String field:fields){        sb.append(field+", ");    }    sb.append(") VALUES (");    for(String field:fields){        sb.append("?, ");    }    sb.append(")");   return   sb.toString().replaceAll(", \\)",")");}