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/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
/**
* Operations on char primitives and Character objects.
*
* This class tries to handle <code>null</code> input gracefully.
* An exception will not be thrown for a <code>null</code> input.
* Each method documents its behaviour in more detail.
*
* @author Stephen Colebourne
* @since 2.1
* @version $Id: CharUtils.java 437554 2006-08-28 06:21:41Z bayard $
*/
public class Main {
/**
* Checks whether the character is ASCII 7 bit numeric.
*
* <pre>
* CharUtils.isAsciiNumeric('a') = false
* CharUtils.isAsciiNumeric('A') = false
* CharUtils.isAsciiNumeric('3') = true
* CharUtils.isAsciiNumeric('-') = false
* CharUtils.isAsciiNumeric('\n') = false
* CharUtils.isAsciiNumeric('©') = false
* </pre>
*
* @param ch the character to check
* @return true if between 48 and 57 inclusive
*/
public static boolean isAsciiNumeric(char ch) {
return ch >= '0' && ch <= '9';
}
}
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