手机号中间用*号表示

public class MobileUtil {
    public static String  getmobile(String mobile){
        if(!StringUtils.isEmpty(mobile)){
            String[] phone = mobile.split("\\+86-");
            String join = org.apache.commons.lang3.StringUtils.join(phone);
            char[] m = join.toCharArray();
            for(int i=0; i2 && i<7){
                    m[i] = '*';
                }
            }
            return  String.valueOf(m);
        }
        return null;
    }
}