A.I. Pong Unexpected token: void

/** this method moves the computer */
public void move (Ball)
{
// calculate the middle of the paddle
real_y_pos = y_pos + (size_y / 2);

/* If the ball is moving in opposite direction to the paddle and is no danger for computer's goal move paddle back to the middle y - position*/
if (ball.getXSpeed() > 0)
{
// if the paddle's position is over the middle y - position
if (real_y_pos < 148)
{
y_pos += y_speed;
}
// Paddle is under the middle y - position
else if (real_y_pos > 152)
{
y_pos -= y_speed;
}
}
// ball is moving towards paddle
else if (ball.getXSpeed() < 0)
{
// As long as ball's y - position and paddle's y - position are different
if ( real_y_pos != ball.getYPos())
{
// If ball's position smaller than paddle's, move up
if (ball.getYPos() < real_y_pos)
{
y_pos -= y_speed;
}
// If ball's position greater than padle's, move down
else if (ball.getYPos() > real_y_pos)
{
y_pos += y_speed;
}
}
}
}