Java tutorial
package com.codenjoy.dojo.kata.model.levels; /*- * #%L * Codenjoy - it's a dojo-like platform from developers to developers. * %% * Copyright (C) 2016 - 2017 Codenjoy * %% * 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/gpl-3.0.html>. * #L% */ import org.apache.commons.lang.StringUtils; /** * Created by indigo on 2017-03-05. */ public class NullAlgorithm implements Algorithm { @Override public String get(String input) { return StringUtils.EMPTY; } @Override public String description() { return StringUtils.EMPTY; } @Override public String author() { return StringUtils.EMPTY; } }