Java 使用截取隐藏手机号

//使用截取隐藏手机号中间部分
public class demo1 {
    public static void main(String[] args) {
        String phone = "18153468453";

        String start = phone.substring(0,4);
        String end = phone.substring(7);

        String newPhone = start + "****" + end;
        System.out.println(newPhone);
    }
}