Java 手机号码格式化为182****5716

/**
     * 手机号码格式化微182****5716
     *
     * @param phone
     * @return
     */
    public static String phoneNumberFormat(String phone) {
        String reStr = phone.substring(phone.length() - 4, phone.length());
        String preStr = phone.substring(0, phone.length() - 9);
        StringBuilder sb = new StringBuilder();
        sb.append(preStr).append("****").append(reStr);
        return sb.toString();

    }

   /**
     * 银行账号格式化
     *
     * @param str
     * @return
     */
    public static String getSubString(String str) {undefined
        String reStr = str.substring(str.length() - 4, str.length());
        return "尾号" + reStr;
    }

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