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Java example source code file (Transmitter.java)

This example Java source code file (Transmitter.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

autocloseable, receiver, transmitter

The Transmitter.java Java example source code

/*
 * Copyright (c) 1999, 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 javax.sound.midi;


/**
 * A <code>Transmitter sends {@link MidiEvent} objects to one or more
 * <code>{@link Receiver Receivers}. Common MIDI transmitters include sequencers
 * and MIDI input ports.
 *
 * @see Receiver
 *
 * @author Kara Kytle
 */
public interface Transmitter extends AutoCloseable {


    /**
     * Sets the receiver to which this transmitter will deliver MIDI messages.
     * If a receiver is currently set, it is replaced with this one.
     * @param receiver the desired receiver.
     */
    public void setReceiver(Receiver receiver);


    /**
     * Obtains the current receiver to which this transmitter will deliver MIDI messages.
     * @return the current receiver.  If no receiver is currently set,
     * returns <code>null
     */
    public Receiver getReceiver();


    /**
     * Indicates that the application has finished using the transmitter, and
     * that limited resources it requires may be released or made available.
     *
     * <p>If the creation of this Transmitter resulted in
     * implicitly opening the underlying device, the device is
     * implicitly closed by this method. This is true unless the device is
     * kept open by other <code>Receiver or Transmitter
     * instances that opened the device implicitly, and unless the device
     * has been opened explicitly. If the device this
     * <code>Transmitter is retrieved from is closed explicitly
     * by calling {@link MidiDevice#close MidiDevice.close}, the
     * <code>Transmitter is closed, too.  For a detailed
     * description of open/close behaviour see the class description
     * of {@link javax.sound.midi.MidiDevice MidiDevice}.
     *
     * @see javax.sound.midi.MidiSystem#getTransmitter
     */
    public void close();
}

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