分析:

1. 初始化一副扑克，放到list里面
2. Collections中的shuffle方法对list中的数据进行打乱，实现洗牌功能
3. 将牌分发给三个玩家，另外需要留下三张底牌，从list中取出三张牌，之后将剩下的分给三个玩家

代码：

public class pkp {

public static void main(String[] args) {
String[] num = {"A","2","3","4","5","6","7","8","9","10","J","Q","K"};
String[] color = {"黑桃","红桃","方片","梅花"};

ArrayList<String> poker = new ArrayList<>();

//循环拼接扑克牌
for(String s1 : color) {
    for(String s2 : num) {
        poker.add(s1 + s2);
    }
}

poker.add("大王");
poker.add("小王");

//洗牌
Collections.shuffle(poker);

ArrayList<String> dipai = new ArrayList<>();
ArrayList<String> pony = new ArrayList<>();
ArrayList<String> jack = new ArrayList<>();
ArrayList<String> domain = new ArrayList<>();

for(int i=0; i<poker.size(); i++) {
    if(i >= poker.size()-3) {
        dipai.add(poker.get(i));
    }else if(i%3 == 0) {
        pony.add(poker.get(i));
    }else if(i%3 == 1) {
        jack.add(poker.get(i));
    }else {
        domain.add(poker.get(i));
    }
}

System.out.println("底牌：" + dipai);
System.out.println("pony：" + pony);
System.out.println("jack：" + jack);
System.out.println("domain：" + domain);
}

}