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Ex. 7.13 and Ex. 7.14 EX 7.13 Create an interface called Visible that includes two methods: makeVisible and makeInvisible. Both methods should take no parameters
Ex. 7.13 and Ex. 7.14
EX 7.13 Create an interface called Visible that includes two methods: makeVisible and makeInvisible. Both methods should take no parameters and should return a boolean result. Describe how a class might implement this interface.
Ex. 7.14 Draw a UML class diagram that shows the relationships among the elements of Exercise 7.13.
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