Java tutorial
/* * ExpL (Expression Language) * Copyright 2014 and beyond, Kenneth Huang * * This file is part of ExpL. * * ExpL is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License version 3 * as published by the Free Software Foundation. * * ExpL 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 ExpL. If not, see <http://www.gnu.org/licenses/>. */ package kenh.expl.functions; import org.apache.commons.lang3.StringUtils; import kenh.expl.impl.BaseFunction; /** * * Gets the leftmost {@code len} characters of a String. * * @author Kenneth * @since 1.0 * * @see StringUtils#left(String, int) * */ public class Left extends BaseFunction { public String process(String str, int len) { return StringUtils.left(str, len); } }