[Controller] Trace and handle cases when invalid commands are entered

cs2103aug2014-w13-2j / main

To-Do list program for CS2103T @ NUS

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[Controller] Trace and handle cases when invalid commands are entered #68

Closed ZiXian92 closed 9 years ago

ZiXian92 commented 9 years ago

Seems that Parser throws IllegalArgumentException when such commands are passed to it. Hence command is null and NullPointerException is thrown. Find a way to resolve it.