private void motor1Forward() throws IOException {
 Runtime.getRuntime().exec("sudo /home/pi/wiringPi/gpio/gpio write 0 1");
 Runtime.getRuntime().exec("sudo /home/pi/wiringPi/gpio/gpio write 1 0");
}
private void motor1Backward() throws IOException {
 Runtime.getRuntime().exec("sudo /home/pi/wiringPi/gpio/gpio write 1 0");
 Runtime.getRuntime().exec("sudo /home/pi/wiringPi/gpio/gpio write 0 1");
}
private void motor1Stop() throws IOException {
 Runtime.getRuntime().exec("sudo /home/pi/wiringPi/gpio/gpio write 0 0");
 Runtime.getRuntime().exec("sudo /home/pi/wiringPi/gpio/gpio write 0 0");
}