1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, 13 * software distributed under the License is distributed on an 14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 * KIND, either express or implied. See the License for the 16 * specific language governing permissions and limitations 17 * under the License. 18 * 19 */ 20 package org.apache.mina.util; 21 22 import java.io.ByteArrayOutputStream; 23 import java.io.OutputStreamWriter; 24 import java.nio.charset.Charset; 25 26 /** 27 * Utilities for dealing with Charsets. 28 * 29 * @author The Apache Directory Project (mina-dev@directory.apache.org) 30 * @version $Rev: 555855 $ 31 */ 32 public class CharsetUtil { 33 public static String getDefaultCharsetName() { 34 // Use reflection here to be able to compile mina with jdk 1.4. 35 try { 36 Class charsetClass = Class.forName("java.nio.charset.Charset"); 37 Object charSet = charsetClass.getMethod("defaultCharset", null) 38 .invoke(null, null); 39 return (String) charsetClass.getMethod("name", null).invoke( 40 charSet, null); 41 } catch (Exception e) { 42 //ignore, not on java 5 43 } 44 45 // Try to use OutputStreamWriter instead. 46 OutputStreamWriter writer = new OutputStreamWriter( 47 new ByteArrayOutputStream()); 48 return writer.getEncoding(); 49 } 50 51 public static Charset getDefaultCharset() { 52 return Charset.forName(getDefaultCharsetName()); 53 } 54 }