Here you can find the source of capitalizedWord(String s)
public static final boolean capitalizedWord(String s)
//package com.java2s; /*//from w ww . ja va2 s .com Copyright 2009 Semantic Discovery, Inc. (www.semanticdiscovery.com) This file is part of the Semantic Discovery Toolkit. The Semantic Discovery Toolkit is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. The Semantic Discovery Toolkit 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with The Semantic Discovery Toolkit. If not, see <http://www.gnu.org/licenses/>. */ public class Main { public static final boolean capitalizedWord(String s) { return capitalizedWord(s, 0, s.length()); } public static final boolean capitalizedWord(String s, int startPos, int endPos) { boolean capitalized = false; int c = s.codePointAt(startPos++); if (c > 65535) ++startPos; if (isCapital(c)) { capitalized = allLowerCase(s, startPos, endPos) && isWord(s, startPos, endPos); } return capitalized; } public static final boolean isCapital(String s, int pos) { return Character.isUpperCase(s.codePointAt(pos)); } public static final boolean isCapital(int codePoint) { //Character.isLetter(c) && (Character.isUpperCase(c) || Character.isTitleCase(c))) return Character.isUpperCase(codePoint); } public static final boolean allLowerCase(String s) { return allLowerCase(s, 0, s.length()); } /** * @return true if all letters in the string are lower case and there is at least one letter. */ public static final boolean allLowerCase(String s, int startPos, int endPos) { boolean allLower = true; boolean foundOne = false; for (int i = startPos; i < endPos; ++i) { final int c = s.codePointAt(i); if (c > 65535) ++i; if (Character.isLetter(c)) { foundOne = true; if (!Character.isLowerCase(c)) { allLower = false; break; } } } return allLower && foundOne; } public static final boolean isWord(String s) { return isWord(s, 0, s.length()); } public static final boolean isWord(String s, int startPos, int endPos) { boolean isWord = true; boolean foundOne = false; for (int i = startPos; i < endPos; ++i) { final int c = s.codePointAt(i); if (c > 65535) ++i; if (!Character.isLetter(c)) { isWord = false; break; } else { if (!foundOne) foundOne = true; } } return isWord && foundOne; } }