You created an Alien class as well as two descendant classes, Martian and Jupiterian. Because you never
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You created an Alien class as well as two descendant classes, Martian and Jupiterian. Because you never create any “plain” Alien objects, alter the Alien class so it is abstract. Verify that the Martian and Jupiterian classes can still inherit from Alien and that the CreateAliens program still works correctly. Save the altered Alien file as Alien.java.
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public abstract class Alien protected int height protected int numLegs pro...View the full answer
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