截取汉字前的字符串

public static void main(String[] args) {
    String str = "ZZZ123456789浙江";  
    str = str.replaceAll("[^\u4e00-\u9fa5]", "");
    String num= str.substring(0,1);
    System.out.println(num);
    String  a= "ZZZ123456789浙江";  
    String b= a.substring(0,a.indexOf(num));
    System.out.println(b);
}