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via Coderanch by Roel De Nijs, 1 year ago
java.lang.NullPointerException: 	at com.crazyzoo.animals.carnivore.Lion.toString(Lion.java:15)	at be.zoo.animals.Animal.(Animal.java:8)	at com.crazyzoo.animals.carnivore.Lion.(Lion.java:10)	at com.crazyzoo.CrazyZoo.main(CrazyZoo.java:8)