winningstrategy.java

来自「<设计模式-Java语言中的应用> 的源码」· Java 代码 · 共 20 行

import java.util.Random;

public class WinningStrategy implements Strategy {
    private Random random;
    private boolean won = false;
    private Hand prevHand;
    public WinningStrategy(int seed) {
        random = new Random(seed);
    }
    public Hand nextHand() {
        if (!won) {
            prevHand = Hand.getHand(random.nextInt(3));
        }
        return prevHand;
    }
    public void study(boolean win) {
        won = win;
    }
}