Java tutorial
//package com.java2s; /** * Copyright (c) 2014-2015 openHAB UG (haftungsbeschraenkt) and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html */ public class Main { public static final String SYSTEM_NAMESPACE_PREFIX = "system."; public static final String SYSTEM_NAMESPACE = "system"; /** * Returns a UID in the format of {1}:{2}, where {1} is {@link #SYSTEM_NAMESPACE} and {2} is the * given typeId stripped of the prefix {@link #SYSTEM_NAMESPACE_PREFIX} if it exists. * * @param typeId * @return system uid (e.g. "system:test") */ public static String getSystemUID(String typeId) { int prefixIdx = typeId.indexOf(SYSTEM_NAMESPACE_PREFIX); if (prefixIdx != -1) { typeId = typeId.substring(prefixIdx + SYSTEM_NAMESPACE_PREFIX.length()); } return String.format("%s:%s", SYSTEM_NAMESPACE, typeId); } }