    001/*
    002 * Licensed to the Apache Software Foundation (ASF) under one or more
    003 * contributor license agreements.  See the NOTICE file distributed with
    004 * this work for additional information regarding copyright ownership.
    005 * The ASF licenses this file to You under the Apache License, Version 2.0
    006 * (the "License"); you may not use this file except in compliance with
    007 * the License.  You may obtain a copy of the License at
    008 *
    009 *      http://www.apache.org/licenses/LICENSE-2.0
    010 *
    011 * Unless required by applicable law or agreed to in writing, software
    012 * distributed under the License is distributed on an "AS IS" BASIS,
    013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    014 * See the License for the specific language governing permissions and
    015 * limitations under the License.
    016 */
    017
    018package org.apache.commons.net.util;
    019
    020import java.nio.charset.Charset;
    021
    022/**
    023 * Helps dealing with Charsets.
    024 *
    025 * @since 3.3
    026 */
    027public class Charsets {
    028
    029    /**
    030     * Returns a charset object for the given charset name.
    031     *
    032     * @param charsetName
    033     *            The name of the requested charset; may be a canonical name, an alias, or null. If null, return the
    034     *            default charset.
    035     * @return A charset object for the named charset
    036     */
    037    public static Charset toCharset(String charsetName) {
    038        return charsetName == null ? Charset.defaultCharset() : Charset.forName(charsetName);
    039    }
    040
    041    /**
    042     * Returns a charset object for the given charset name.
    043     *
    044     * @param charsetName
    045     *            The name of the requested charset; may be a canonical name, an alias, or null.
    046     *            If null, return the default charset.
    047     * @param defaultCharsetName the charset name to use if the requested charset is null
    048     *
    049     * @return A charset object for the named charset
    050     */
    051    public static Charset toCharset(String charsetName, String defaultCharsetName) {
    052        return charsetName == null ? Charset.forName(defaultCharsetName) : Charset.forName(charsetName);
    053    }
    054}