策略模式與模版模式

策略模式

根據用戶的需求處理數據時候需要對算法進行選擇，用戶只具有選擇權，且不參與到過程中

public interface Comportar {
    /**
     * 比較方法
     * @param o1 參數1
     * @param o2 參數2
     * @return
     */
    int comparTo(Object o1,Object o2);
}

public class NumberComportar implements Comportar {
    @Override
    public int comparTo(Object o1, Object o2) {
        System.out.println("我是數值比較器");
        return 1;
    }
}

public class ObjectComportar implements  Comportar {
    @Override
    public int comparTo(Object o1, Object o2) {
        System.out.println("我是對象比較器");
        return 0;
    }
}

public class MyListTest  {
    public static void main(String[] args) {
        MyList myList1 = new MyList();
        MyList myList2= new MyList();

        ObjectComportar objectComportar = new ObjectComportar();
        NumberComportar numberComportar = new NumberComportar();
        myList1.sort(numberComportar,myList1,myList2);
    }
}

public class MyList {
    public void sort(Comportar comportar,MyList m1,MyList m2){
        comportar.comparTo(m1,m2);
        System.out.println("比較完成");

    }
}

模版模式

模版模式通常又叫做模版方法模式，用戶沒有選擇，但是可以參與到過程中

public abstract  class Bevegrage {

    public final void create(){
        //1.燒水
        boilWater();
        //2.準備杯子。放入原料
        pourIncp();
        //用水沖泡
        brew();
        //添加輔料
        addCoundiments();
    }

    protected abstract void addCoundiments();

    private void brew() {
        System.out.println("倒入熱水");
    }

    protected abstract void pourIncp();

    private void boilWater() {
        System.out.println("燒開水");
    }
}

public class Coffee extends Bevegrage {
    @Override
    protected void addCoundiments() {
        System.out.println("放入咖啡豆");
    }

    @Override
    protected void pourIncp() {
        System.out.println("放入奶油");

    }
}

public class Tea extends Bevegrage {
    @Override
    protected void addCoundiments() {
        System.out.println("放入茶葉");
    }

    @Override
    protected void pourIncp() {

        System.out.println("放入柚子");
    }
}

public class Test {

    public static void main(String[] args) {
        Coffee coffee = new Coffee();
        coffee.create();
    }
    
}