GraphicalClient uses uninitialized field.

[mlhpdx]

The line of code below will throw a null reference exception when attempting to use the GraphicalClient instead of TextClient in student ship programs:

SpaceBattleArena/java_client_src/src/ihs/apcs/spacebattle/GraphicalClient.java

Line 129 in 9e4a7bb

cmd = (ShipCommand)shipType.getMethod("getNextCommand", Environment.class).invoke(ship, env);

The issue appears to be that instead of assigning to the field shipType at line 75 the code instead assigns to a local variable leaving the field with a null value:

SpaceBattleArena/java_client_src/src/ihs/apcs/spacebattle/GraphicalClient.java

Line 75 in 9e4a7bb

Class<?> shipType = Class.forName(this.shipClassname);