Java Digit From toDigit(final char ch, final int index)

Description

Converts a hexadecimal character to an integer.

License

Open Source License

Parameter

Parameter	Description
ch	A character to convert to an integer digit
index	The index of the character in the source

Exception

Parameter	Description
IllegalArgumentException	Thrown if ch is an illegal hex character

Return

An integer

Declaration

private static int toDigit(final char ch, final int index) throws IllegalArgumentException 

Method Source Code

//package com.java2s;
/*/*from   ww w  .  java  2 s .com*/
 * Copyright (c) 2019, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 * WSO2 Inc. 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.
 */

public class Main {
    /**
     * Converts a hexadecimal character to an integer.
     *
     * @param ch A character to convert to an integer digit
     * @param index The index of the character in the source
     * @return An integer
     * @throws IllegalArgumentException Thrown if ch is an illegal hex character
     */
    private static int toDigit(final char ch, final int index) throws IllegalArgumentException {
        final int digit = Character.digit(ch, 16);
        if (digit == -1) {
            throw new IllegalArgumentException("Illegal hexadecimal character " + ch + " at index " + index);
        }
        return digit;
    }
}

Related

1. toDigit(char c)
2. toDigit(char ch)
3. toDigit(char ch, int index)
4. toDigit(final boolean bit)
5. toDigit(final char ch, final int index)
6. toDigit(final int value)
7. toDigit(int c)
8. toDigit(int i)
9. toDigit(int n)