lab 9 close #7

lab/lab9/Question5/BadDoorException.java

@@ -0,0 +1,16 @@
+/*
+ * BadDoorException
+ */
+
+public class BadDoorException extends Exception {
+	// generate serial version ID by class name
+	private static final long serialVersionUID = BadDoorException.class.getName().hashCode();
+
+	public BadDoorException() {
+		super();
+	}
+
+	public BadDoorException(String message) {
+		super(message);
+	}
+}