忙活了许久，知识掌握的还是不牢靠

package com.imooc;

import java.util.Comparator;

public class Card implements Comparator<Card> {

public String suit;//花色

public String point;//点数

public Card(){

}

public Card(String suit,String point){
    this.suit = suit;
    this.point = point;
}

@Override
public String toString() {

    return suit + point;
}

@Override
public int compare(Card o1, Card o2) {

    String suit = "方片 梅花 红桃  黑桃";
    String point = "2 3 4 5 6 7 8 9 10 J Q K A";
    int result = point.indexOf(o1.point) - point.indexOf(o2.point);
    if(result < 0){
        return -1;
    }else if(result > 0){
        return 1;
    }else{
        int result2 = suit.indexOf(o1.suit) - suit.indexOf(o2.suit);
        if(result2 < 0 ){
            return -1;
        }else if(result2 > 0){
            return 1;
        }else{
            return 0;
        }
    }
}

}

package com.imooc;
import java.util.ArrayList;
import java.util.List;

/**

• 玩家
• @author Administrator

• */
  public class Player {

  public int id;//玩家id
  public String name;//玩家姓名
  public List<Card> handCards;//玩家手牌

  public Player(int id,String name){
  this.id = id;
  this.name = name;
  handCards = new ArrayList<Card>();
  }
  }

package com.imooc;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Scanner;

package com.imooc;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.InputMismatchException;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Scanner;

/**

• 扑克牌游戏测试类
• @author Administrator

• */
  public class CardsTest {

  public static void main(String[] args) {
  System.out.println("**创建扑克牌****");
  //创建存放扑克牌的list集合
  List<Card> cardsList = new ArrayList<Card>();
  //创建扑克牌的花色数组
  String[] suits = {"方片","梅花","红桃","黑桃"};
  //创建扑克牌的点数数组
  String[] points = {"2","3","4","5","6","7","8","9","10","J","Q","K","A"};
  for(int i = 0;i < suits.length;i++){
  for(int j = 0;j < points.length;j++){
  Card card = new Card(suits[i],points[j]);
  cardsList.add(card);
  }
  }
  System.out.println("**扑克牌创建成功****");
  System.out.println("**创建的扑克牌为：" + "\n" + cardsList);

  System.out.println("******************洗牌开始*************************");
  Collections.shuffle(cardsList);//集合中的混排
  System.out.println("******************洗牌结束*************************");
  
  System.out.println("******************创建玩家*************************");
  //创建map用于存放玩家的id和name
  Map<Integer,String> map = new HashMap<Integer, String>();
  //创建list集合用于存储玩家对象
  List<Player> playerList = new ArrayList<Player>();
  for(int i = 0;i < 2;i++){
      //创建Scanner对象
      Scanner scanner = new Scanner(System.in);
      //声明变量id
      Integer id = 0;
      System.out.println("请输入第"+(i+1)+"位玩家的id和姓名：");
      while(true){
          try {
              System.out.println("输入id：");
              id = scanner.nextInt();
              break;
          } catch (InputMismatchException e) {
              System.out.println("请输入整数id:");
              scanner = new Scanner(System.in);//重置Scanner对象，不然会死循环
          }
      }
          System.out.println("输入姓名：");
          String name = scanner.next();
          map.put(id, name);
          playerList.add(new Player(id,name));
  }
  
  //遍历map集合
  for(Entry<Integer, String> entry : map.entrySet()){
      System.out.println("*******欢迎玩家：" + entry.getValue());
  }
  
  System.out.println("******************开始发牌********************");
  
  //将第一张牌发给玩家1
  playerList.get(0).handCards.add(cardsList.get(0));
  System.out.println("*****玩家：" + playerList.get(0).name + "-拿牌");
  //将第二张牌发给玩家2
  playerList.get(1).handCards.add(cardsList.get(1));
  System.out.println("*****玩家：" + playerList.get(1).name + "-拿牌");
  //将第三张牌发给玩家1
  playerList.get(0).handCards.add(cardsList.get(2));
  System.out.println("*****玩家：" + playerList.get(0).name + "-拿牌");
  //将第四张牌发给玩家2
  playerList.get(1).handCards.add(cardsList.get(3));
  System.out.println("*****玩家：" + playerList.get(1).name + "-拿牌");
  
  System.out.println("******************发牌结束*********************");
  
  System.out.println("******************开始游戏*********************");
  //先比较玩家1手中的牌
  Collections.sort(playerList.get(0).handCards, new Card());
  //得到玩家1手中的最大牌
  Card card1 = playerList.get(0).handCards.get(1);
  System.out.println("玩家：" + playerList.get(0).name + "最大的牌为：" + card1);
  //再比较玩家2手中的牌
  Collections.sort(playerList.get(1).handCards, new Card());
  //得到玩家2手中的最大牌
  Card card2 = playerList.get(1).handCards.get(1);
  System.out.println("玩家：" + playerList.get(1).name + "最大的牌为：" + card2);
  //最后比较两个玩家手中的最大牌，分出胜负
  List<Card> lastCardList = new ArrayList<Card>();
  lastCardList.add(card1);
  lastCardList.add(card2);
  Collections.sort(lastCardList, new Card());
  if(lastCardList.get(1).suit.equals(card1.suit) && lastCardList.get(1).point.equals(card1.point)){
      System.out.println("******************玩家："+playerList.get(0).name+"获胜！*********************");
  }else{
      System.out.println("******************玩家："+playerList.get(1).name+"获胜！*********************");
  }
  //玩家各自的手牌
  System.out.println("玩家各自的手牌为：" + "\n" + playerList.get(0).name + ":" + playerList.get(0).handCards
          + "\n" + playerList.get(1).name + ":" +playerList.get(1).handCards);

  }
  }