How to operate the poker game by Java?

Question

I’ve learned Java for 1 month. This time, I’d like to create a poker game. There are two questions about my program. I hope somebody can help me to fix it.

Answer 1

this is probably more than you need, but you can do a lot with enums:

package sample;
import java.util.*;
enum Rank { 
    joker(new Character('*'),"Joker"),aceLow(new Character('a'),"Ace(low)"),deuce(new Character('2'),"Deuce"),trey(new Character('3'),"Trey"),four(new Character('4'),"Four"),five(new Character('5'),"Five"),six(new Character('6'),"Six"),seven(new Character('7'),"Seven"),eight(new Character('8'),"Eight"),nine(new Character('9'),"Nine"),ten(new Character('T'),"Ten"),jack(new Character('J'),"Jack"),queen(new Character('Q'),"Queen"),king(new Character('K'),"King"),aceHigh(new Character('A'),"Ace");
    Rank(final Character c,final String s) {
        this.c=c;
        this.s=s;
    }
    public static Rank fromInt(int n) {
        for(Rank r:Rank.values())
            if(r.ordinal()==n)
                return r;
        return null;
    }
    public static Rank fromCharacter(char c) {
        for(Rank r:Rank.values())
            if(r.c==c)
                return r;
        return null;
    }
    public static Rank[] fromCharacters(final String cards) {
        final Rank[] rank=new Rank[5];
        for(int i=0;i<5;i++)
            rank[i]=Rank.fromCharacter(cards.charAt(i));
        return rank;
    }
    public Character toCharacter() {
        return c;
    }
    public String toString() {
        return s;
    }
    public static String toString(final Rank[] rank) {
        String s="";
        for(Rank r:rank)
            s+=r.toCharacter();
        return s;
    }
    final Character c;
    final String s;
}
enum Suit {
    joker(new Character('*'),"Joker"),clubs(new Character('c'/* try character for a real dimond? */),"Club"),diamonds(new Character('d'),"Diamond"),hearts(new Character('h'),"Heart"),spades(new Character('s'),"Spade");
    Suit(final Character c,final String s) {
        this.c=c;
        this.s=s;
    }
    public static Suit fromCharacter(char c) {
        for(Suit s:Suit.values())
            if(s.c==c)
                return s;
        return null;
    }
    public Character toCharacter() {
        return c;
    }

    public String toString() {
        return s;
    }
    public static String toString(final Suit[] suit) {
        String s_="";
        for(Suit s:suit)
            s_+=s.toCharacter();
        return s_;
    }
    public static boolean areSuited(final Suit[] suit) {
        final int n=suit.length;
        for(int i=0;i0)
                s+=", ";
            s+=card[i].toCharacters();
        }
        return s;
    }
    public String toCharacters() {
        return ""+rank().toCharacter()+suit().toCharacter();
    }
    public static Card instance(Rank rank,Suit suit) { // some hack for speed
        final int n=4*rank.ordinal()+suit.ordinal();
        //System.out.println(rank+" "+suit+" "+n);
        return element[4*rank.ordinal()+suit.ordinal()];
    }
    static Card[] create(int standards,int jokers) {
        int cards=0;
        Card card[]=new Card[standards*52+jokers];
        for(int i=0;i