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/* * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package com.sun.media.sound; import javax.sound.midi.*;  /** * Helper class which allows to convert {@code Transmitter} * to {@code MidiDeviceTransmitter}. * * @author Alex Menkov */public class MidiDeviceTransmitterEnvelope implements MidiDeviceTransmitter {     private final MidiDevice device;    private final Transmitter transmitter;     /**     * Creates a new {@code MidiDeviceTransmitterEnvelope} object which     * envelops the specified {@code Transmitter}     * and is owned by the specified {@code MidiDevice}.     *     * @param device the owner {@code MidiDevice}     * @param transmitter the {@code Transmitter} to be enveloped     */    public MidiDeviceTransmitterEnvelope(MidiDevice device, Transmitter transmitter) {        if (device == null || transmitter == null) {            throw new NullPointerException();        }        this.device = device;        this.transmitter = transmitter;    }     // Transmitter implementation    public void setReceiver(Receiver receiver) {        transmitter.setReceiver(receiver);    }     public Receiver getReceiver() {        return transmitter.getReceiver();    }     public void close() {        transmitter.close();    }      // MidiDeviceReceiver implementation    public MidiDevice getMidiDevice() {        return device;    }     /**     * Obtains the transmitter enveloped     * by this {@code MidiDeviceTransmitterEnvelope} object.     *     * @return the enveloped transmitter     */    public Transmitter getTransmitter() {        return transmitter;    }}