Indicates whether a character is classified as "Alphabetic" by the Unicode standard. - Java java.lang

Java examples for java.lang:String Unicode

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Description

Indicates whether a character is classified as "Alphabetic" by the Unicode standard.

Demo Code

/*/*from ww w.jav a  2 s .  co  m*/
 * 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.
 */
//package com.java2s;

public class Main {
    /**
     * Indicates whether a character is classified as "Alphabetic" by the
     * Unicode standard.
     * 
     * @param c
     *            the character
     * @return true if the character is "Alphabetic"
     */
    public static boolean isAlphabetic(final int c) {
        // http://www.unicode.org/Public/UNIDATA/UCD.html#Alphabetic
        // Generated from: Other_Alphabetic + Lu + Ll + Lt + Lm + Lo + Nl
        final int generalCategory = Character.getType((char) c);
        switch (generalCategory) {
        case Character.UPPERCASE_LETTER: // Lu
        case Character.LOWERCASE_LETTER: // Ll
        case Character.TITLECASE_LETTER: // Lt
        case Character.MODIFIER_LETTER: // Lm
        case Character.OTHER_LETTER: // Lo
        case Character.LETTER_NUMBER: // Nl
            return true;
        default:
            // TODO if (ch in Other_Alphabetic) return true; (Probably need
            // ICU4J for that)
            // Other_Alphabetic contains mostly more exotic characters
            return false;
        }
    }
}

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