1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 package org.openoffice.xmerge.util; 25 26 import java.util.ResourceBundle; 27 28 /** 29 * <p>Provides a singleton resource class for converter messages.</p> 30 * 31 * <p>By default, this class will search for a 32 * <code>ResourceBundle</code> class file or properties file based 33 * on the default locale.</p> 34 * 35 * <p>A properties file resources.properties will be provided.</p> 36 * 37 * <p>Note that if the resource bundle object is not loaded, the 38 * construction of the singleton object will throw a 39 * <code>MissingResourceException</code>, which is a 40 * <code>RuntimeException</code>, thus I opted to not explicitly 41 * declare it. If it does throw <code>MissingResourceException</code>, 42 * it may be due to a packaging problem.</p> 43 * 44 * @author Herbie Ong 45 */ 46 public final class Resources 47 { 48 private ResourceBundle rb = null; 49 50 private static Resources instance = null; 51 52 53 /** 54 * This method returns the singleton instance 55 * of this class. 56 * 57 * @return The singleton <code>Resources</code> 58 * instance. 59 */ getInstance()60 public synchronized static Resources getInstance() 61 { 62 if (instance == null) 63 { 64 instance = new Resources(); 65 } 66 67 return instance; 68 } 69 70 71 /** 72 * Default constructor is only accessible within this class. 73 * Load the resource bundle that contains the resource 74 * <code>String</code> values. 75 */ Resources()76 private Resources() 77 { 78 rb = ResourceBundle.getBundle("org.openoffice.xmerge.util.resources"); 79 } 80 81 82 /** 83 * This method returns the corresponding <code>String</code> given 84 * the key. 85 * 86 * @param key Key string for getting the message 87 * <code>String</code>. 88 * @return Message <code>String</code> corresponding to the key. 89 */ getString(String key)90 public String getString(String key) 91 { 92 return rb.getString(key); 93 } 94 } 95 96