Practice›Java Fundamentals›Module 8. Interfaces & Abstract Classes›8.4 Choosing

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Problem

8.4 Choosing — capstone: unrelated classes, one contract

Write a complete program with an interface Printable, an abstract class Shape, a class Square that extends Shape and implements Printable, and a class Tag that is not a Shape at all but is still Printable.

Read a square side and a tag text, put both objects in one Printable[], and print their labels joined by a single space.

For the input 3 hi:

[Square] <hi>

The two objects share no superclass — only the interface — and one loop still handles both.

1000 ms

256 Mb

Solution

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