42 lines
823 B
Java
42 lines
823 B
Java
//: reuse/Car.java
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// ©2015 MindView LLC: see Copyright.txt
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// Composition with public objects.
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class Engine {
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public void start() {}
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public void rev() {}
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public void stop() {}
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}
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class Wheel {
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public void inflate(int psi) {}
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}
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class Window {
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public void rollup() {}
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public void rolldown() {}
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}
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class Door {
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public Window window = new Window();
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public void open() {}
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public void close() {}
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}
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public class Car {
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public Engine engine = new Engine();
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public Wheel[] wheel = new Wheel[4];
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public Door
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left = new Door(),
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right = new Door(); // 2-door
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public Car() {
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for(int i = 0; i < 4; i++)
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wheel[i] = new Wheel();
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}
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public static void main(String[] args) {
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Car car = new Car();
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car.left.window.rollup();
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car.wheel[0].inflate(72);
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}
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} /* Output: (None) *///:~
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