個人小結，寫的過程中主要卡在三個地方，：

1.洗牌打亂順序??不知道用Collections的shuffle（）方法
?自己用ArrayList遍歷放到HashSet里再放回去試了一通，完全不能用（順序確實亂了，但每次都亂的一毛一樣）

2.輸入ID不正時，如何重復輸入。?琢磨出while死循環(huán)+try-catch方式????
??一直有個疑問：編譯器總提示Scanner對象從未close，加了close又會出現(xiàn)死循環(huán)，沒等用戶輸入就向下繼續(xù)執(zhí)行了

3.比較牌面時，Comparable和Comparator重寫的方法的實現(xiàn)方式
??打撲克2最大，A其次，然后K?Q?J?
??只知道課程里講到的compareTo和compare方法，于是投機取巧利用HashMap硬將無規(guī)律字符串與整數(shù)值映射，再compare.
??疑問：參考了其它同學的內(nèi)容，一種做法是把代表牌面大小（點數(shù)和花色）變一個屬性會更簡便些，或者其它做法...?

代碼如下：

GameTest.java

package?test_pukepa_game;
import?java.util.ArrayList;
import?java.util.Collections;
import?java.util.InputMismatchException;
import?java.util.List;
import?java.util.Scanner;
public?class?GameTest?{
????private?List<PlayingCard>?cardsList;
????private?List<Player>?playerList;
????public?GameTest()?{
????????this.cardsList??=?new?ArrayList<>();
????????this.playerList?=?new?ArrayList<Player>();
????????}
????//?創(chuàng)建撲克牌
????public?void?makeCards()?{
????????String[]?types?=?{"黑桃","紅桃","梅花","方片"};
????????String[]?points?=?{"2","3","4","5","6","7","8","9","10","J","Q","K","A"};
????????List<String>?cards?=?new?ArrayList<String>();
?
????????for?(int?i?=?0;?i?<?types.length;?i++)?{
????????????for?(int?j?=?0;?j?<?points.length;?j++)?{
????????????????cardsList.add(new?PlayingCard(points[j],?types[i]));
????????????????cards.add(types[i]?+?points[j])??;
????????????}
????????}
????????System.out.println("----------撲克牌創(chuàng)建成功！------------");
????????System.out.println("為："?+?cards.toString());
????}
????//?洗牌
????public?void?resetCards()?{
????????//?重復玩時，?清空玩家的手牌
????????if(playerList.size()?>?0)?{
????????????for?(Player?player?:?playerList)?{
????????????????????player.getCards().clear();
????????????}
????????}
????????System.out.println("----------洗牌前："+cardsList.toString());
????????//*******Collections類的shuffle()方法的作用是將List中的內(nèi)容隨機打亂順序*****//
????????Collections.shuffle(cardsList);
????????//**********************************//
????????System.out.println("----------洗牌后："+cardsList.toString());
????????System.out.println("----------洗牌結束！------------------");
????}
????//?創(chuàng)建玩家
????public?void?makePlayer()?{
????????for?(int?i?=?1;?i?<?3;?i++)?{
????????????System.out.println("請輸入第"?+?i?+?"位玩家的ID和姓名：");
????????????while?(true)?{
????????????????try?{
????????????????????Scanner?console?=?new?Scanner(System.in);
????????????????????System.out.println("輸入ID:");
????????????????????Integer?id?=?console.nextInt();
????????????????????System.out.println("輸入姓名:");
????????????????????String?name?=?console.next();
????????????????????playerList.add(new?Player(id,?name));
????????????????????break;
????????????????}?catch?(InputMismatchException?e)?{
????????????????????//?TODO?Auto-generated?catch?block
????????????????????System.out.println("請輸入整數(shù)類型的ID!");
????????????????????continue;
????????????????}
???????????}
????????}
????????for?(Player?player?:?playerList)?{
????????????System.out.println("---歡迎玩家："?+?player.getName());
????????}
????}
????//?發(fā)牌?一人發(fā)兩張牌
????public?void?takeCards()?{
????????for?(int?i?=?0;?i?<?2;?i++)?{
????????????for?(int?j?=?0;?j?<?playerList.size();?j++)?{
????????????????Player?player?=?playerList.get(j);
????????????????player.getCards().add(new?PlayingCard(cardsList.get(i*2?+j).getNumber(),?cardsList.get(i*2+j).getType()));
????????????????System.out.println("---玩家："+?player.getName()?+?"-拿牌");
????????????}
????????}
????????System.out.println("----------發(fā)牌結束！------------------");
????}
????
????//?游戲開始比較
????public?void?startGame()?{
????????ArrayList<PlayingCard>?cards?=?new?ArrayList<PlayingCard>();
????????//取出手中點數(shù)最大的牌
????????for?(Player?player?:?playerList)?{
????????????Collections.sort(player.getCards());
????????????PlayingCard?pc?=?player.getCards().get(1);
????????????cards.add(pc);
????????????System.out.println("玩家："+player.getName()?+?"最大的手牌為:"+pc.getType()+pc.getNumber());
????????}
????????//?最大的牌進行比較
????????if(cards.get(0).getNumber().equals(cards.get(1).getNumber()))?{
????????????Collections.sort(cards,?new?PlayingCardComparator());
????????}?else?{
????????????Collections.sort(cards);
????????}
????????
????????//?遍歷找出最大牌的擁有者為勝者???hashCode?和?equals方法重寫
????????for?(Player?player?:?playerList)?{
????????????if(player.getCards().contains(cards.get(1))){
????????????????System.out.println("---------玩家："+player.getName()+"獲勝！--------------------");
????????????????break;
????????????}
????????}
????????
????????System.out.println("玩家各自的手牌為：");
????????for?(Player?player?:?playerList)?{
????????????System.out.println(player.getName()+":"+player.getCards().toString());
????????}
????}
????
????public?static?void?main(String[]?args)?{
????????GameTest?gt?=?new?GameTest();
????????System.out.println("----------創(chuàng)建撲克牌------------------");
????????gt.makeCards();
????????gt.makePlayer();
????????while(true)?{
????????????System.out.println("----------開始洗牌...--------------------");
????????????gt.resetCards();
????????????System.out.println("----------開始發(fā)牌...--------------------");
????????????gt.takeCards();
????????????System.out.println("----------開始游戲...--------------------");
????????????gt.startGame();
????????????System.out.println("----------還要繼續(xù)嗎？1--是?0--否------");
????????????Scanner?console?=?new?Scanner(System.in);
????????????try?{
????????????????if(0?==?console.nextInt())?{
????????????????????System.out.println("----------游戲結束------");
????????????????????break;
????????????????}
????????????????}?catch(InputMismatchException?e)?{
????????????????System.out.println("----------游戲結束------");
????????????????break;
????????????????}
????????}
????}
}

PlayingCard.java???//撲克牌

package?test_pukepa_game;
import?java.util.HashMap;
public?class?PlayingCard?implements?Comparable<PlayingCard>{
private?String?number;
private?String?type;
public?PlayingCard(String?number,?String?type)?{
this.number?=?number;
this.type?=?type;
}
public?String?getNumber()?{
return?number;
}
public?void?setNumber(String?number)?{
this.number?=?number;
}
public?String?getType()?{
return?type;
}
public?void?setType(String?type)?{
this.type?=?type;
}
@Override
public?int?hashCode()?{
final?int?prime?=?31;
int?result?=?1;
result?=?prime?*?result?+?((number?==?null)???0?:?number.hashCode());
result?=?prime?*?result?+?((type?==?null)???0?:?type.hashCode());
return?result;
}
@Override
public?boolean?equals(Object?obj)?{
if?(this?==?obj)
return?true;
if?(obj?==?null)
return?false;
if?(!(obj?instanceof?PlayingCard))
return?false;
PlayingCard?other?=?(PlayingCard)?obj;
if?(number?==?null)?{
if?(other.number?!=?null)
return?false;
}?else?if?(!number.equals(other.number))
return?false;
if?(type?==?null)?{
if?(other.type?!=?null)
return?false;
}?else?if?(!type.equals(other.type))
return?false;
return?true;
}
@Override
public?int?compareTo(PlayingCard?o)?{
//?TODO?Auto-generated?method?stub
HashMap<String,?Integer>?hashmap?=?new?HashMap<String,?Integer>();
for(int?i?=?3;?i?<=10;?i++)?{
hashmap.put(String.valueOf(i),?i);
}
hashmap.put("J",?11);
hashmap.put("Q",?12);
hashmap.put("K",?13);
hashmap.put("A",?14);
hashmap.put("2",?15);
//?按照點數(shù)比較大小
return?hashmap.get(this.number).compareTo(hashmap.get(o.number));
}
@Override
public?String?toString()?{
return?type+?number?;
}
}

PlayingCardComparator.java??//按花色比較的Comparator接口實現(xiàn)類

package?test_pukepa_game;
import?java.util.Comparator;
import?java.util.HashMap;
public?class?PlayingCardComparator?implements?Comparator<PlayingCard>?{
@Override
public?int?compare(PlayingCard?o1,?PlayingCard?o2)?{
//?TODO?Auto-generated?method?stub
HashMap<String,?Integer>?hashmap?=?new?HashMap<String,?Integer>();
hashmap.put("黑桃",?4);
hashmap.put("紅桃",?3);
hashmap.put("梅花",?2);
hashmap.put("方片",?1);
return?hashmap.get(o1.getType()).compareTo(hashmap.get(o2.getType()));
}
}

Player.java?//?玩家類

package?test_pukepa_game;
import?java.util.ArrayList;
import?java.util.List;
//?玩家類
public?class?Player?{
private?Integer??id;
private?String?name;
private?List<PlayingCard>?cards;
public?Player(Integer?id,?String?name)?{
this.id?=?id;
this.name?=?name;
this.cards?=?new?ArrayList<PlayingCard>();
}
public?Integer?getId()?{
return?id;
}
public?String?getName()?{
return?name;
}
public?List<PlayingCard>?getCards()?{
return?cards;
}
}