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大佬們,comparable方法哪里有問題 能指點一下下嗎

package?com.imooc;import?java.util.ArrayList;import?java.util.Arrays;import?java.util.Collections;import?java.util.List;import?java.util.Scanner;public?class?Puke?implements?Comparable?{public?String?color;public?String?num;public?List<Puke>pukes;public?List<Player>players;?//玩家列表public?Puke(String?color,String?num){	this.color=color;	this.num=num;	this.pukes=new?ArrayList<Puke>();	this.players=new?ArrayList<Player>();}public?Puke(){	this.pukes=new?ArrayList<Puke>();	this.players=new?ArrayList<Player>();}/*?*創(chuàng)建撲克牌?*/public?void?creatPuke(){	String?color[]={"黑桃","紅桃","梅花","方片"};	String?num[]={"2","3","4","5","6","7","8","9","10","J","Q","K","A"};	for(int?i=0;i<4;i++){		for(int?j=0;j<13;j++){			Puke?puke=new?Puke(color[i],num[j]);			pukes.add(puke);		}	}}/*?*?創(chuàng)建玩家?*/public?void?creatPlayer(){	Scanner?input=new?Scanner(System.in);	for(int?i=1;i<=2;i++){		System.out.println("請玩家輸入ID:");		String?id=input.next();		System.out.println("請玩家輸入姓名:");		String?name=input.next();		Player?player=new?Player(id,name);		players.add(player);	}	System.out.println("******一共有"+players.size()+"名玩家******");	for(Player?player:players){		System.out.println("*********玩家:"+player.name+"**********");	}}/*?*?洗牌?*/public?void?rushPuke(){	System.out.println("******洗**牌******");	Collections.shuffle(pukes);}/*?*?發(fā)牌?*/public?void?sendPuke(){	System.out.println("******洗牌*結(jié)束******");	System.out.println("********發(fā)**牌********");	Puke?a;	for(int?i=0;i<4;i++){		a=pukes.get(i);		if(i%2==0){			players.get(0).cards.add(a);			System.out.println("*****玩家"+players.get(0).name+"拿牌*****");		}else{			players.get(1).cards.add(a);			System.out.println("*****玩家"+players.get(1).name+"拿牌*****");		}		}}/*?*?比較大小?*/public?void?comparable(){Puke?p1=players.get(0).cards.get(0);Puke?p2=players.get(0).cards.get(1);Puke?p3=players.get(0).cards.get(0);Puke?p4=players.get(0).cards.get(1);if((p1.compareTo(p3)>0)&&(p1.compareTo(p4)>0)){	System.out.println("游戲獲勝者是玩家:"+players.get(0).name);}if((p2.compareTo(p3)>0)&&(p2.compareTo(p4)>0)){	System.out.println("游戲獲勝者是玩家:"+players.get(0).name);}if((p3.compareTo(p1)>0)&&(p3.compareTo(p2)>0)){	System.out.println("游戲獲勝者是玩家:"+players.get(1).name);}if((p3.compareTo(p1)>0)&&(p4.compareTo(p2)>0)){	System.out.println("游戲獲勝者是玩家:"+players.get(1).name);}}public?int?compareTo(Puke?P2)?{		String?colorOrder?=?"黑桃,紅桃,梅花,方塊";		String?numOrder?=?"2,3,4,5,6,7,8,9,10,J,Q,K,A,";		int?x?=?numOrder.indexOf(this.getNum());		int?y?=?numOrder.indexOf(P2.getNum());		if(x<y)?{		return?-1;		}else?if(x>y)?{		return?1;		}else{		return?0;		}}public?String?getNum()?{	//?TODO?Auto-generated?method?stub	return?null;}/*?*?遍歷撲克?*/public?void?forPuke(){	System.out.println("52張撲克如下");	for(Puke?puke:pukes){		System.out.println(puke.color+":"+puke.num);	}}public?static?void?main(String[]?args)?{	Puke?pk=new?Puke();	pk.creatPuke();	pk.forPuke();	pk.creatPlayer();	pk.rushPuke();	pk.sendPuke();	pk.comparable();}}


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1 回答

Puke類在實現(xiàn)可比較接口時要指明要比較的對象的類

Public class Puke implements Comparable<Puke>{}

然后調(diào)整CompareTo函數(shù)就行了

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大佬們,comparable方法哪里有問題 能指點一下下嗎

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