Java tutorial
package ch.cyberduck.core; /* * Copyright (c) 2002-2017 iterate GmbH. All rights reserved. * https://cyberduck.io/ * * 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 2 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. */ import ch.cyberduck.core.preferences.PreferencesFactory; import org.apache.commons.lang3.StringUtils; public class RootProviderHelpService implements ProviderHelpService { public final String base; public RootProviderHelpService() { this(PreferencesFactory.get().getProperty("website.help")); } public RootProviderHelpService(final String base) { this.base = base; } public String help() { return this.help(StringUtils.EMPTY); } @Override public String help(final Protocol provider) { return this.help(StringUtils.EMPTY); } @Override public String help(final Scheme scheme) { return this.help(StringUtils.EMPTY); } protected String help(final String page) { final StringBuilder site = new StringBuilder(base); if (StringUtils.isNotBlank(page)) { site.append("/").append(page); } return site.toString(); } }