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import java.util.PriorityQueue;
import javax.sound.midi.*;
import javax.sound.midi.MidiMessage.*;
class MIDIMessageReceiver implements Receiver
{
private PriorityQueue<MidiMessage> messages;
MIDIMessageReceiver()
{
messages = new PriorityQueue<MidiMessage>();
}
public void send(MidiMessage message, long timeStamp)
{
messages.add(message);
}
public boolean hasReceived()
{
return (messages.size() != 0);
}
public MidiMessage receive()
{
return messages.poll();
}
public void close()
{
}
}
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