fruit.java

Java程序设计大学教程程序源代码

package jbookch4.gardensys2;

public class Fruit implements IGain, IPlant {
    public Fruit(String fname, float in) {
        fruitName = fname;
        investment = in;
    }

    public Fruit(String fname) {
        fruitName = fname;
        investment = 0;
    }

    public float gain() {
        float g = investment * 0.5f;
        System.out.println(fruitName + "种植投入" + investment + "，收益为" + g);
        return g;
    }

    public void grow() {
        System.out.println(fruitName + "生长...");
    }

    public void harvest() {
        System.out.println(fruitName + "收获...");
    }

    private String fruitName;
    private float investment;


}