1 /* 2 * Copyright (C) 2007 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.base; 18 19 import java.nio.charset.Charset; 20 21 /** 22 * Contains constant definitions for the six standard {@link Charset} 23 * instances, which are guaranteed to be supported by all Java platform 24 * implementations. 25 * 26 * @author Mike Bostock 27 * @since 2009.09.15 <b>tentative</b> 28 */ 29 public final class Charsets { Charsets()30 private Charsets() {} 31 32 /** 33 * US-ASCII: seven-bit ASCII, a.k.a. ISO646-US, a.k.a the Basic Latin block of 34 * the Unicode character set. 35 */ 36 public static final Charset US_ASCII = Charset.forName("US-ASCII"); 37 38 /** 39 * ISO-8859-1. ISO Latin Alphabet No. 1, a.k.a. ISO-LATIN-1. 40 */ 41 public static final Charset ISO_8859_1 = Charset.forName("ISO-8859-1"); 42 43 /** 44 * UTF-8: eight-bit UCS Transformation Format. 45 */ 46 public static final Charset UTF_8 = Charset.forName("UTF-8"); 47 48 /** 49 * UTF-16BE: sixteen-bit UCS Transformation Format, big-endian byte order. 50 */ 51 public static final Charset UTF_16BE = Charset.forName("UTF-16BE"); 52 53 /** 54 * UTF-16LE: sixteen-bit UCS Transformation Format, little-endian byte order. 55 */ 56 public static final Charset UTF_16LE = Charset.forName("UTF-16LE"); 57 58 /** 59 * UTF-16: sixteen-bit UCS Transformation Format, byte order identified by an 60 * optional byte-order mark. 61 */ 62 public static final Charset UTF_16 = Charset.forName("UTF-16"); 63 64 /* 65 * Please do not add new Charset references to this class, unless those 66 * character encodings are part of the set required to be supported by all 67 * Java platform implementations! Any Charsets initialized here may cause 68 * unexpected delays when this class is loaded. See the Charset Javadocs for 69 * the list of built-in character encodings. 70 */ 71 } 72