Here you can find the source of endsWithDoubleConsonent(String str)
private static boolean endsWithDoubleConsonent(String str)
//package com.java2s; /*//from ww w .j a v a2 s.c o m * Copyright 2000-2009 JetBrains s.r.o. * * 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 boolean endsWithDoubleConsonent(String str) { char c = str.charAt(str.length() - 1); if (str.length() > 1 && c == str.charAt(str.length() - 2)) { if (!containsVowel(str.substring(str.length() - 2))) { return true; } } return false; } private static boolean containsVowel(String str) { char[] strchars = str.toCharArray(); for (char strchar : strchars) { if (isVowel(strchar)) return true; } // no aeiou but there is y if (str.indexOf('y') > -1) { return true; } else { return false; } } private static boolean isVowel(char c) { if ((c == 'a') || (c == 'e') || (c == 'i') || (c == 'o') || (c == 'u')) { return true; } else { return false; } } }