Android Char Value Check isLetter(char ch)

Description

is Letter

License

Open Source License

Declaration

public static boolean isLetter(char ch) 

Method Source Code

//package com.java2s;
/*/*  w w w . jav a  2 s  .  c  o m*/
 * Copyright (C) 2007-2010 Geometer Plus <contact@geometerplus.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

public class Main {
    public static boolean isLetter(char ch) {
        return (('a' <= ch) && (ch <= 'z'))
                || (('A' <= ch) && (ch <= 'Z'))
                ||
                // ' is "letter" (in French, for example)
                (ch == '\'')
                ||
                // ^ is "letter" (in Esperanto)
                (ch == '^')
                ||
                // latin1
                ((0xC0 <= ch) && (ch <= 0xFF) && (ch != 0xD7) && (ch != 0xF7))
                ||
                // extended latin1
                ((0x100 <= ch) && (ch <= 0x178)) ||
                // cyrillic
                ((0x410 <= ch) && (ch <= 0x44F)) ||
                // cyrillic YO & yo
                (ch == 0x401) || (ch == 0x451);
    }
}

Related

1. isLatin(char c)
2. isNumber(char c)
3. isTashekil(char c)
4. isTatweel(char c)
5. isYeh(char c)
6. isContainSpecialChar(String str, String charSet)