add some error handling

1 files changed, 72 insertions, 0 deletions

diff --git a/src/Q10/README.md b/src/Q10/README.md
index 1cc52b1..4e31e37 100644
--- a/src/Q10/README.md
+++ b/src/Q10/README.md
@@ -51,6 +51,78 @@
   1. Quit - stop the program from accepting any more commands.
 
 1. Description of the Code
+  There are two classes. `TrainTimeTable` is responsible for add a delay in
+  minutes starting for a specific station. `Station` is responsible for managing
+  the arrival and departure time to/from a specific train station.
+
+  When a delay is added to the time table the code will add the delay to the
+  station, then to each station after it.
+
+  It would have been easier to represent dates as a unix timestamp, which is the
+  number of seconds since the UNIX epoch.
+  The Java Date class prefers to use millisecond precision.
+
+  All dates are represented using the UTC timezone.
+
+  I chose to add a method/constructor overloads to make the API of each of the
+  classes easier to unit test.
+  This also helped the class design to better adhere to the open/closed principle.
+
 1. Errors and Warnings
+
+  When an unknown command is entered, the prompt is shown again.
+
+  ```bash
+  モ mvn package
+  モ java -cp target/assignment2*.jar ca.mokhan.comp268.App 10
+  === Question 10 ===
+
+  Enter command (Show, Delay, Quit):
+  invalid
+  Unknown command
+
+  Enter command (Show, Delay, Quit):
+  ```
+
+  When an unknown city is entered, an error is displayed.
+
+  ```bash
+  モ mvn package
+  モ java -cp target/assignment2*.jar ca.mokhan.comp268.App 10
+  === Question 10 ===
+
+  Enter command (Show, Delay, Quit):
+  Delay Calgary 25
+  `Calgary` is not on the schedule
+
+  Enter command (Show, Delay, Quit):
+  ```
+
+  When a non-numeric value is entered for minutes, an error is displayed.
+
+  ```bash
+  java -cp target/assignment2*.jar ca.mokhan.comp268.App 10
+  === Question 10 ===
+
+  Enter command (Show, Delay, Quit):
+  Delay Edmonton blah
+  Invalid minutes entered
+
+  Enter command (Show, Delay, Quit):
+  ```
+
+  When a delay of greater than 48 hours is entered, an error is displayed.
+
+  ```bash
+  java -cp target/assignment2*.jar ca.mokhan.comp268.App 10
+  === Question 10 ===
+
+  Enter command (Show, Delay, Quit):
+  Delay Edmonton 9999
+  Invalid minutes entered
+
+  Enter command (Show, Delay, Quit):
+  ```
+
 1. Sample Input and Output
 1. Discussion