Added Java playback example

MATLAB/PlaybackExample/Playback.m

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+%% X-Plane Connect MATLAB Recording Example Script
+% This script demonstrates how to playback recorded data from X-Plane.
+% (See Record.m)
+% Before running this script, ensure that the XPC plugin is installed and
+% X-Plane is running.
+%% Import XPC
+addpath('../')
+import XPlaneConnect.*
+
+%% Setup
+% Create variables and open connection to X-Plane
+path = 'MyRecording.txt'; % File containing stored data
+interval = 0.1; % Time between snapshots in seconds
+Socket = openUDP(); % Open connection to X-Plane
+fd = fopen(path, 'r'); % Open file
+
+disp('X-Plane Connect Playback Example Script');
+fprintf('Playing back ''%s'' in %fs increments.\n', path, interval);
+
+%% Start Recording
+count = floor(duration / interval);
+for i = 1:count
+    posi = fscanf(fd, '%f, %f, %f, %f, %f, %f, %f\n');
+    sendPOSI(posi);
+    pause(interval);
+end
+
+%% Close connection and file
+closeUDP(Socket);
+fclose(fd);
+
+disp('Recording complete.');

MATLAB/PlaybackExample/Record.m

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+%% X-Plane Connect MATLAB Recording Example Script
+% This script demonstrates how to record data from X-Plane that can later
+% be played back. (See Playback.m)
+% Before running this script, ensure that the XPC plugin is installed and
+% X-Plane is running.
+%% Import XPC
+addpath('../')
+import XPlaneConnect.*
+
+%% Setup
+% Create variables and open connection to X-Plane
+path = 'MyRecording.txt'; % File to save the data in
+interval = 0.1; % Time between snapshots in seconds
+duration = 10; % Time to record for in seconds
+Socket = openUDP(); % Open connection to X-Plane
+fd = fopen(path, 'w'); % Open file
+
+disp('X-Plane Connect Recording Example Script');
+fprintf('Recording to ''%s'' for $f seconds in %fs increments.\n', path, duration, interval);
+
+%% Start Recording
+count = floor(duration / interval);
+for i = 1:count
+    posi = getPOSI();
+    fprintf(fd, '%f, %f, %f, %f, %f, %f, %f\n', ...
+        posi(1), posi(2), posi(3), posi(4), posi(5), posi(6), posi(7));
+    pause(interval);
+end
+
+%% Close connection and file
+closeUDP(Socket);
+fclose(fd);
+
+disp('Recording complete.');