Java tutorial
//package com.java2s; /* * Aipo is a groupware program developed by Aimluck,Inc. * Copyright (C) 2004-2011 Aimluck,Inc. * http://www.aipo.com * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ public class Main { public static String convertHiragana2Katakana(String str) { StringBuffer buf = new StringBuffer(); for (int i = 0; i < str.length(); i++) { char code = str.charAt(i); if ((code >= 0x3041) && (code <= 0x3093)) { buf.append((char) (code + 0x60)); } else { buf.append(code); } } return buf.toString(); } }