Java IBM Cloudant NoSql：为“创建QueryBuilder变量”；“字段”；

对于java中的IBM Cloudant NoSql，我可以创建如下QueryBuilder：

        QueryBuilder queryBuilder = new QueryBuilder(and(
                gt("Movie_year", 1960),
                eq("Person_name", "Alec Guinness"))).
                sort(Sort.desc("Movie_year")).
                fields("Movie_name", "Movie_year").
                limit(10);

我希望字段是变量，而不是硬编码的字段。我管理除“字段”之外的所有变量

如何将“字段”设置为变量？

在这里找到了答案：

代码现在是：

    // variables
    selector = and(
            gt("Movie_year", 1960),
            eq("Person_name", "Alec Guinness"));
    Sort sort = Sort.desc("Movie_year");
    String[] field = {"Movie_name", "Movie_year"};
    int limit = 10;
    int skip = 0;
    // create query Builder 
    queryBuilder = new QueryBuilder(
            selector).
            sort(sort).
            fields(field).
            limit(limit).
            skip(skip);

    // variables
    selector = and(
            gt("Movie_year", 1960),
            eq("Person_name", "Alec Guinness"));
    Sort sort = Sort.desc("Movie_year");
    String[] field = {"Movie_name", "Movie_year"};
    int limit = 10;
    int skip = 0;
    // create query Builder 
    queryBuilder = new QueryBuilder(
            selector).
            sort(sort).
            fields(field).
            limit(limit).
            skip(skip);