com.alibaba.nacos.common.utils.NumberUtil Maven / Gradle / Ivy
/*
* Copyright 1999-2020 Alibaba Group Holding Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.nacos.common.utils;
/**
* Nacos number util.
*
* @author xiweng.yy
*/
public class NumberUtil {
/**
* Whether all chars of input string is digit.
*
* @param input {@code String} checked
* @return {@code true} if all chars is digit, otherwise false
*/
public static boolean isDigits(String input) {
if (StringUtils.isEmpty(input)) {
return false;
}
for (int i = 0; i < input.length(); i++) {
if (!Character.isDigit(input.charAt(i))) {
return false;
}
}
return true;
}
}