训练15 汽车厂、鞋厂都是工厂
创建抽象的工厂类,工厂类有一个抽象的生产方法。让汽车厂和鞋厂都继承工厂类,汽车厂生产汽车,鞋厂生产鞋。
public class AutoPlant extends Factory {String productsName;public AutoPlant(String productsName) {this.productsName = productsName;}@Overridepublic String produce() {return this.productsName;}
}public abstract class Factory {String name;public String getName() {return name;}public void setName(String name) {this.name = name;}public abstract String produce();
}public class ShoeFactory extends Factory {String productsName;public ShoeFactory(String productsName) {this.productsName = productsName;}@Overridepublic String produce() {return this.productsName;}
}public class Test {public static void main(String[] args) {AutoPlant autoPlant = new AutoPlant("汽车");autoPlant.setName("汽车厂");System.out.println(autoPlant.getName() + "生产的是" + autoPlant.productsName);ShoeFactory shoeFactory = new ShoeFactory("鞋");shoeFactory.setName("鞋厂");System.out.println(shoeFactory.getName() + "生产的是" + shoeFactory.productsName);}
}
训练16 五颜六色的接口
创建一个五颜六色的接口Colorful,接口中有一个表示点亮的抽象方法shine()。编写一段代码,实现红灯发红光,黄灯发黄光,绿灯发绿光。
interface Colorful {void shine();
}class RedLights implements Colorful {@Overridepublic void shine() {System.out.println("红灯亮红光");}
}class YellowLights implements Colorful {@Overridepublic void shine() {System.out.println("黄灯亮黄光");}
}class GreenLights implements Colorful {@Overridepublic void shine() {System.out.println("绿灯亮绿光");}
}