Add: a5 close #9

assignment5/Question4/Movable.java

@@ -0,0 +1,9 @@
+/*
+ * Author: CHEN Yongyuan (Walter) 1930006025 from OOP(1007)
+ * Date: 2022-04-24
+ * Description: This is a moveable interface.
+ */
+
+public interface Movable {
+	public int accelerate(int amount) throws ExceedSpeedLimit, NotEnoughSpeed, TrainSpeedChange;
+}