1条回答 默认 最新
- _寻隐者不遇 2020-06-12 13:41关注
public class Animal { private double weight; public double getWeight() { return weight; } public void setWeight(double weight) { this.weight = weight; } public void eat(){ System.out.println("执行Animal 吃!"); }; }
public class Bird extends Animal { private int numberOfWings; public int getNumberOfWings() { return numberOfWings; } public void setNumberOfWings(int numberOfWings) { this.numberOfWings = numberOfWings; } public void fly(){ System.out.println("执行 bird 飞!"); } }
public class Fish extends Animal { private int numberOfWings; public int getNumberOfFins() { return numberOfWings; } public void setNumberOfWings(int numberOfWings) { this.numberOfWings = numberOfWings; } public void swim(){ System.out.println("执行 fish 游!"); } }
public class Test { public static void main(String[] args) { Bird animal=new Bird(); animal.setNumberOfWings(20); System.out.println("NumberOfWings:"+animal.getNumberOfWings()); animal.eat(); animal.fly(); } }
初学建议不要直接cv代码,先理解面向对象,理解父类,子类,继承实现写这个就很简单。
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