【正則表達式】判斷是否為名字

//名字長度最長為4位
//百家姓正則表達式
public boolean xmPd(String a) {
        if(a.length()<=4) {
            String pattern = "^[趙,錢,孫,李,周,吳,鄭,王,馮,陳,楮,衛,蔣,沈,韓,楊,朱,秦,尤,許,何,呂,施,張,孔,曹,嚴,華,金,魏,陶,"
                    + "姜,戚,謝,鄒,喻,柏,水,竇,章,雲,蘇,潘,葛,奚,范,彭,郎,魯,韋,昌,馬,苗,鳳,花,方,俞,任,袁,柳,酆,鮑,史,唐,費,廉,岑,薛,雷,賀,倪,湯,滕,殷,羅,"
                    + "畢,郝,鄔,安,常,樂,於,時,傅,皮,卞,齊,康,伍,余,元,卜,顧,孟,平,黃,和,穆,蕭,尹,姚,邵,湛,汪,祁,毛,禹,狄,米,貝,明,臧,計,伏,成,戴,談,宋,茅,"
                    + "龐,熊,紀,舒,屈,項,祝,董,梁,杜,阮,藍,閩,席,季,麻,強,賈,路,婁,危,江,童,顏,郭,梅,盛,林,刁,鍾,徐,丘,駱,高,夏,蔡,田,樊,胡,凌,霍,虞,萬,支,"
                    + "柯,昝,管,盧,莫,經,房,裘,繆,干,解,應,宗,丁,宣,賁,鄧,郁,單,杭,洪,包,諸,左,石,崔,吉,鈕,龔,程,嵇,邢,滑,裴,陸,榮,翁,荀,羊,於,惠,甄,麹,家,"
                    + "封,芮,羿,儲,靳,汲,邴,糜,松,井,段,富,巫,烏,焦,巴,弓,牧,隗,山,谷,車,侯,宓,蓬,全,郗,班,仰,秋,仲,伊,宮,寧,仇,欒,暴,甘,斜,厲,戎,祖,武,符,"
                    + "劉,景,詹,束,龍,葉,幸,司,韶,郜,黎,薊,薄,印,宿,白,懷,蒲,邰,從,鄂,索,咸,籍,賴,卓,藺,屠,蒙,池,喬,陰,郁,胥,能,蒼,雙,聞,莘,黨,翟,譚,貢,勞,"
                    + "逄,姬,申,扶,堵,冉,宰,酈,雍,郤,璩,桑,桂,濮,牛,壽,通,邊,扈,燕,冀,郟,浦,尚,農,溫,別,庄,晏,柴,瞿,閻,充,慕,連,茹,習,宦,艾,魚,容,向,古,易,"
                    + "慎,戈,廖,庾,終,暨,居,衡,步,都,耿,滿,弘,匡,國,文,寇,廣,祿,闕,東,歐,殳,沃,利,蔚,越,夔,隆,師,鞏,厙,聶,晁,勾,敖,融,冷,訾,辛,闞,那,簡,饒,"
                    + "空,曾,毋,沙,乜,養,鞠,須,豐,巢,關,蒯,相,查,后,荊,紅,游,竺,權,逑,蓋,益,桓,公,萬俟,司馬,上官,歐陽,夏侯,諸葛,聞人,東方,赫連,皇甫,尉遲,"
                    + "公羊,澹台,公冶,宗政,濮陽,淳於,單於,太叔,申屠,公孫,仲孫,軒轅,令狐,鍾離,宇文,長孫,慕容,鮮於,閭丘,司徒,司空,丌官,司寇,仉,督,子車,"
                    + "顓孫,端木,巫馬,公西,漆雕,樂正,壤駟,公良,拓拔,夾谷,宰父,谷梁,晉,楚,閻,法,汝,鄢,塗,欽,段干,百里,東郭,南門,呼延,歸,海,羊舌,微生,岳,"
                    + "帥,緱,亢,況,后,有,琴,梁丘,左丘,東門,西門,商,牟,佘,佴,伯,賞,南宮,墨,哈,譙,笪,年,愛,陽,佟,第五,言,福][\\u4e00-\\u9fa5]{1,4}$";
            
            boolean matches = a.matches(pattern);
            return matches;
        }else {
            return false;
        }
    }