static String buildInsertSql(String table, String[] fields) {    StringBuilder sb=new StringBuilder(1024);    sb.append("INSERT INTO ").append(table).append(" (");    for(String s:fields){        sb.append(s);        if (s.equals(fields[fields.length-1])){            sb.append(") VALUES ");        }else {            sb.append(", ");        }    }    sb.append("(");    for (int i=0;i<fields.length;i++){        sb.append("?");        if (i==fields.length-1){            sb.append(")");        }else {            sb.append(", ");        }    }    return sb.toString();}