Here you can find the source of hexValue(char c)
private static int hexValue(char c)
//package com.java2s; /**//from w w w. jav a 2s. co m * Copyright (c) 2000, Google Inc. * * 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. */ public class Main { private static int hexValue(char c) { if ((c >= '0') && (c <= '9')) { return (c - '0'); } else if ((c >= 'a') && (c <= 'f')) { return (c - 'a') + 10; } else { return (c - 'A') + 10; } } }