【正则表达式】判断是否为名字

//名字长度最长为4位
//百家姓正则表达式
public boolean xmPd(String a) {
        if(a.length()<=4) {
            String pattern = "^[赵,钱,孙,李,周,吴,郑,王,冯,陈,楮,卫,蒋,沈,韩,杨,朱,秦,尤,许,何,吕,施,张,孔,曹,严,华,金,魏,陶,"
                    + "姜,戚,谢,邹,喻,柏,水,窦,章,云,苏,潘,葛,奚,范,彭,郎,鲁,韦,昌,马,苗,凤,花,方,俞,任,袁,柳,酆,鲍,史,唐,费,廉,岑,薛,雷,贺,倪,汤,滕,殷,罗,"
                    + "毕,郝,邬,安,常,乐,于,时,傅,皮,卞,齐,康,伍,余,元,卜,顾,孟,平,黄,和,穆,萧,尹,姚,邵,湛,汪,祁,毛,禹,狄,米,贝,明,臧,计,伏,成,戴,谈,宋,茅,"
                    + "庞,熊,纪,舒,屈,项,祝,董,梁,杜,阮,蓝,闽,席,季,麻,强,贾,路,娄,危,江,童,颜,郭,梅,盛,林,刁,锺,徐,丘,骆,高,夏,蔡,田,樊,胡,凌,霍,虞,万,支,"
                    + "柯,昝,管,卢,莫,经,房,裘,缪,干,解,应,宗,丁,宣,贲,邓,郁,单,杭,洪,包,诸,左,石,崔,吉,钮,龚,程,嵇,邢,滑,裴,陆,荣,翁,荀,羊,於,惠,甄,麹,家,"
                    + "封,芮,羿,储,靳,汲,邴,糜,松,井,段,富,巫,乌,焦,巴,弓,牧,隗,山,谷,车,侯,宓,蓬,全,郗,班,仰,秋,仲,伊,宫,宁,仇,栾,暴,甘,斜,厉,戎,祖,武,符,"
                    + "刘,景,詹,束,龙,叶,幸,司,韶,郜,黎,蓟,薄,印,宿,白,怀,蒲,邰,从,鄂,索,咸,籍,赖,卓,蔺,屠,蒙,池,乔,阴,郁,胥,能,苍,双,闻,莘,党,翟,谭,贡,劳,"
                    + "逄,姬,申,扶,堵,冉,宰,郦,雍,郤,璩,桑,桂,濮,牛,寿,通,边,扈,燕,冀,郏,浦,尚,农,温,别,庄,晏,柴,瞿,阎,充,慕,连,茹,习,宦,艾,鱼,容,向,古,易,"
                    + "慎,戈,廖,庾,终,暨,居,衡,步,都,耿,满,弘,匡,国,文,寇,广,禄,阙,东,欧,殳,沃,利,蔚,越,夔,隆,师,巩,厍,聂,晁,勾,敖,融,冷,訾,辛,阚,那,简,饶,"
                    + "空,曾,毋,沙,乜,养,鞠,须,丰,巢,关,蒯,相,查,后,荆,红,游,竺,权,逑,盖,益,桓,公,万俟,司马,上官,欧阳,夏侯,诸葛,闻人,东方,赫连,皇甫,尉迟,"
                    + "公羊,澹台,公冶,宗政,濮阳,淳于,单于,太叔,申屠,公孙,仲孙,轩辕,令狐,锺离,宇文,长孙,慕容,鲜于,闾丘,司徒,司空,丌官,司寇,仉,督,子车,"
                    + "颛孙,端木,巫马,公西,漆雕,乐正,壤驷,公良,拓拔,夹谷,宰父,谷梁,晋,楚,阎,法,汝,鄢,涂,钦,段干,百里,东郭,南门,呼延,归,海,羊舌,微生,岳,"
                    + "帅,缑,亢,况,后,有,琴,梁丘,左丘,东门,西门,商,牟,佘,佴,伯,赏,南宫,墨,哈,谯,笪,年,爱,阳,佟,第五,言,福][\\u4e00-\\u9fa5]{1,4}$";
            
            boolean matches = a.matches(pattern);
            return matches;
        }else {
            return false;
        }
    }