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via Oracle Community by 807593, 1 year ago
This exception has no message.
java.lang.NullPointerException: 	at undefined.Greeter.getUserChoice(Greeter.java:31)	at undefined.Greeter.getUserChoice(Greeter.java:35)	at undefined.SodaMachine.go(SodaMachine.java:24)	at undefined.SimTester.main(SimTester.java:13)