Java学习之模拟纸牌游戏，List的ArrayList，Map的HashMap，重写Collections类的sort方法对指定类进行通过特定属性排序，输入异常处理等的学习

• 首先放上测试效果图

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• 设计框架

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• 具体的代码实现

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• 创建玩家类

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public class Player implements Comparable<Player>{
    int id;
    String name;
    List<Card> cardList;
    Integer maxCard;
    public Player(int id, String name){
        this.id = id;
        this.name = name;
        this.cardList = new ArrayList<Card>();
    }
    public int compareTo(Player o) {
        return this.maxCard.compareTo(o.maxCard);
    }
}

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• 创建扑克牌类

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public class Card implements Comparable<Card>{
    Integer id;
    String value;
    public Card(Integer id, String value) {
        this.id = id;
        this.value = value;
    }
    public int compareTo(Card o) {
        return this.id.compareTo(o.id);
    }    
}

• 创建进行游戏类

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public class PlayCards {
    
    Scanner console;
    List<Card> cardlist;
    Map<Integer, Player> playermap;
    List<Card> shufflelist;
    public PlayCards(){
        console = new Scanner(System.in);
        cardlist = new ArrayList<Card>();
        playermap = new HashMap<Integer, Player>();
        shufflelist = new ArrayList<Card>();
    }
//创建扑克牌的方法
    public void creatCard() {
        System.out.println("------创建扑克牌------");
        String[] head = {"方片","梅花","红桃","黑桃"};
        String[] number = {"2","3","4","5","6","7","8","9","10","J","Q","K","A"};
        int id = 0;
        for (int i = 0; i < 13; i++) {
            for (int j = 0; j < 4; j++) {
                String tempstr = head[j] + number[i];
                Card card = new Card(id++, tempstr);
                cardlist.add(card);
            }
        }
        System.out.println("------扑克牌创建成功！------");
        System.out.println("*********************************************");
        for (int i = 0; i < 52; i++) {
            if(i % 13 == 0) {
                System.out.println();
            }
            System.out.print(cardlist.get(i).value);
        }
        System.out.println("
**********************************************");
        

    }
//进行洗牌的方法
    public void shuffle() {
        Random random = new Random();
        System.out.println("------开始洗牌------");
        for (int i = 52; i > 0; i--) {
            int tempNum = random.nextInt(i);
            Card tempcard = cardlist.get(tempNum);
            cardlist.remove(tempNum);
            shufflelist.add(tempcard);
            
        }
        System.out.println("------洗牌结束!------");
    }
//创建玩家并录入相关id与姓名的方法    
    public void creatPlayer() {
        System.out.println("------创建玩家------");
        
        int i = 1;
        while(i < 3) {
            try {
                System.out.println("请输入第" + i + "位玩家的ID和姓名");
                System.out.println("请输入整数ID：");
                Scanner input = new Scanner(System.in);
                Integer integer = input.nextInt();
                Player player = playermap.get(integer);
                if(player == null) {
                    System.out.println("请输入姓名：");
                    String name = console.next();
                    Player newPlayer = new Player(integer, name);
                    playermap.put(integer, newPlayer);
                    i++;
                }else {
                    System.out.println("玩家ID被已占用，请重新输入！");
                    continue;
                }
            }catch(InputMismatchException e) {
                System.out.println("玩家ID输入有误，请输入规定的整数");
                continue;
            }
        }
        Set<Entry<Integer, Player>> entry = playermap.entrySet();
        for (Entry<Integer, Player> ey: entry) {
            System.out.println("----欢迎玩家：" + ey.getValue().name);
        }
        
    }
//进行发牌给玩家的方法
    public void sendCardToPyer() {
        System.out.println("规定两位玩家的手牌数小于27张");
        try {
            System.out.println("请输入每位玩家的手牌数：");
            Scanner input = new Scanner(System.in);
            int cardNum = input.nextInt();
            if (cardNum > 26 || cardNum < 1) {
                sendCardToPyer();
            }else {
                System.out.println("------开始发牌------");
                int k = 0;
                Set<Entry<Integer, Player>> entry = playermap.entrySet();
                for (int i = 0; i < cardNum; i++) {
                    for (Entry<Integer, Player> ey: entry) {
                        ey.getValue().cardList.add(shufflelist.get(k++));
                        System.out.println("玩家：" + ey.getValue().name + "-拿牌");
                    }
                }
                System.out.println("------发牌结束------");
            }
            
        }catch(InputMismatchException e) {
            sendCardToPyer();
        }
        
    }
//两位玩家取出最大的手牌比较并决定胜负以及亮手牌的方法
    public void whoIsWinner() {
        Set<Entry<Integer, Player>> entry = playermap.entrySet();
        List<Player> playerlist = new ArrayList<Player>();
        for (Entry<Integer, Player> ey: entry) {
            Collections.sort(ey.getValue().cardList);
            int listsize = ey.getValue().cardList.size();
            ey.getValue().maxCard = ey.getValue().cardList.get(listsize -1).id ;
            playerlist.add(ey.getValue());
            System.out.println("玩家：" + ey.getValue().name + "最大的手牌为：" 
            + ey.getValue().cardList.get(listsize - 1).value);
        }
        Collections.sort(playerlist);
        System.out.println("------玩家：" + playerlist.get(playerlist.size() - 1).name + "获胜！------");
        System.out.println("玩家各自的手牌为：");
        for (Player player: playerlist){
            System.out.print(player.name + ": ");
            for (Card card: player.cardList) {
                System.out.print(card.value + " ");
            }
            System.out.println();        
        }     
    }    
}

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• 创建初始类

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public class Initial {
    
    public static void main(String[] args) {
        Scanner  input = null;
        int i = 0;
        while(true) {
            System.out.println("按  任意数字  开始游戏");
            try {
                input = new Scanner(System.in);
                i = input.nextInt();    
                break;
            }catch(InputMismatchException e) {
                System.out.println("请按要求输入！！！");
            }
        }
        PlayCards playcards = new PlayCards();
        playcards.creatCard();
        playcards.shuffle();
        playcards.creatPlayer();
        playcards.sendCardToPyer();
        playcards.whoIsWinner();
        System.out.println("欢迎下次游戏！！！");
        System.exit(0);

        if (input != null) {
            input.close();
            input = null;
        }
    }
}

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