Here you can find the source of isEmoji(char c)
public static boolean isEmoji(char c)
//package com.java2s; /*// ww w. ja va 2 s. com * imoten - i mode.net mail tensou(forward) * * Copyright (C) 2010 shoozhoo (http://code.google.com/p/imoten/) * * 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 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * */ public class Main { public static boolean isEmoji(char c) { if (Character.UnicodeBlock.of(c) == Character.UnicodeBlock.PRIVATE_USE_AREA) { return true; } else { return false; } } }