How often do you have 2 basics for battle lands?

package battlelands;

import java.util.Arrays.*;
import java.util.Random;

public class BattleLands {

    public static void main(String[] args) {

        Deck deck=new Deck();

        //CardType 1 is a Battle land
        //CardType 2 used to be a fetch-land, which is now not used anymore and set to 0
        //CardType 3 is a basic land (or Evolving Wilds)
        //CardType 4 is another land (e.g., man-land or pain-land)
        //CardType 5 is a non-land card

        for (int basics=1; basics<=20; basics++){

            System.out.println("=================================================");
            System.out.println("We now consider a deck with "+basics+" basic lands");
            System.out.println("=================================================");

            //The first output line give the percentage probability that a Battle land which would be played on turn 3 enters tapped.
            //The second output line give the percentage probability that a Battle land which would be played on turn 4 enters tapped.
            //The third output line give the percentage probability that a Battle land which would be played on turn 5 enters tapped.

            deck.SetDeck(4,0,basics,21-basics,35);
            double Probability;

            for (int turn=3; turn<=5; turn++){
                Probability=ProbabilityForRandomHand(deck,7,1000000,turn);
                System.out.println(Math.round(Probability*10000)/100.0);
            }
        }

    }//end of main

    public static double ProbabilityForRandomHand(Deck deck, int StartingCards, int NumberOfIterations, int ProbabilityType){
        //ProbabilityType 3: Probability that you have at least 2 basics in play at the start of turn 3 (outcome: 0=yes 2 basics, 1=no not enough basics)
        //ProbabilityType 4: Probability that you have at least 2 basics in play at the start of turn 4 (outcome: 0=yes 2 basics, 1=no not enough basics)
        //ProbabilityType 5: Probability that you have at least 2 basics in play at the start of turn 5 (outcome: 0=yes 2 basics, 1=no not enough basics)

        Deck remainingdeck=new Deck();
        double NumberOfRelevantGames=0;
        double NumberOfGamesWithUnfavorableOutcome=0;
        for (int IterationCounter=1; IterationCounter<=NumberOfIterations; IterationCounter++){
            OpeningHand openinghand=GiveOpeningHandAfterMulls(deck, StartingCards);
            remainingdeck.SetDeck(deck.NumberOfBattleLands-openinghand.NumberOfBattleLands,deck.NumberOfFetchLands-openinghand.NumberOfFetchLands,deck.NumberOfBasicLands-openinghand.NumberOfBasicLands,deck.NumberOfOtherLands-openinghand.NumberOfOtherLands,deck.NumberOfSpells-openinghand.NumberOfSpells);
            int Outcome=SimulateGame(remainingdeck,openinghand,ProbabilityType);
            if (Outcome<2) {NumberOfRelevantGames++;} //This is currently not used
            if (Outcome==1) {NumberOfGamesWithUnfavorableOutcome++;}
        }
        return NumberOfGamesWithUnfavorableOutcome/(NumberOfRelevantGames+0.0);
    }//end of AverageKillTurnForRandomHand

    static OpeningHand GiveOpeningHandAfterMulls (Deck deck, int StartingCards) {

        Deck remainingdeck=new Deck();
        OpeningHand openinghand=new OpeningHand();
        int TypeOfCardDrawn;
        boolean KeepHand=false;

        for (int OpeningHandSize=7; OpeningHandSize>=1; OpeningHandSize--){
            if (KeepHand==false){
                openinghand.SetHand(0,0,0,0,0);
                remainingdeck.SetDeck(deck.NumberOfBattleLands,deck.NumberOfFetchLands,deck.NumberOfBasicLands,deck.NumberOfOtherLands,deck.NumberOfSpells);
                int NumberOfLands=0;
                for (int CardsDrawn=0; CardsDrawn<OpeningHandSize; CardsDrawn++){
                    TypeOfCardDrawn=remainingdeck.DrawCard();
                    if (TypeOfCardDrawn==1) {openinghand.NumberOfBattleLands++; NumberOfLands++;}
                    if (TypeOfCardDrawn==2) {openinghand.NumberOfFetchLands++; NumberOfLands++;}
                    if (TypeOfCardDrawn==3) {openinghand.NumberOfBasicLands++; NumberOfLands++;}
                    if (TypeOfCardDrawn==4) {openinghand.NumberOfOtherLands++; NumberOfLands++;}
                    if (TypeOfCardDrawn==5) {openinghand.NumberOfSpells++;}
                }
                KeepHand=true;
                if (OpeningHandSize>1) {
                    // We mulligan a hand if it contains 0, 1, 5, 6, or 7 lands
                    if (NumberOfLands<=1 || NumberOfLands>=5) {KeepHand=false;}
                    //
                }
            }
        }

        return openinghand;
    }//end of GiveOpeningHandAfterMulls


    static int SimulateGame(Deck remainingdeck, OpeningHand openinghand, int ProbabilityType) {

        int TypeOfCardDrawn=0;
        int BasicsInPlay=0;
        int Outcome=2;
        boolean GotABattleLandThisTurn=false;
        boolean ThisLandEnteredTapped=false;
        boolean EnoughBasicsAtStartTurn=false;

        int BattleLandsInHand=openinghand.NumberOfBattleLands;
        int FetchLandsInHand=openinghand.NumberOfFetchLands;
        int BasicLandsInHand=openinghand.NumberOfBasicLands;
        int OtherLandsInHand=openinghand.NumberOfOtherLands;
        int SpellsInHand=openinghand.NumberOfSpells;

        for (int Turn=1; Turn<=5; Turn++){
            if (Turn>1) {
                TypeOfCardDrawn=remainingdeck.DrawCard();
                if (TypeOfCardDrawn==1) {BattleLandsInHand++;}
                if (TypeOfCardDrawn==2) {FetchLandsInHand++;}
                if (TypeOfCardDrawn==3) {BasicLandsInHand++;}
                if (TypeOfCardDrawn==4) {OtherLandsInHand++;}
                if (TypeOfCardDrawn==5) {SpellsInHand++;}
            }
            boolean LandPlayed=false;

            if (Turn==ProbabilityType && BasicsInPlay>=2) {EnoughBasicsAtStartTurn=true;}

            //1. If there are >=2 basics in play and you can play a Battle land from hand, then do so
            if (BasicsInPlay>=2 && BattleLandsInHand>=1) {
                BattleLandsInHand--;
                if (Turn==ProbabilityType) {GotABattleLandThisTurn=true; ThisLandEnteredTapped=false;}
                LandPlayed=true;
            }

            //3. Otherwise, if you can play a basic from hand, then do so
            if (LandPlayed==false && BasicLandsInHand>=1) {
                BasicLandsInHand--;
                BasicsInPlay++;
                LandPlayed=true;
            }

            //5. Otherwise, play another land
            if (LandPlayed==false && OtherLandsInHand>=1) {
                OtherLandsInHand--;
                LandPlayed=true;
            }

            //6. Otherwise, play a Battle land
            if (LandPlayed==false && BattleLandsInHand>=1) {
                BattleLandsInHand--;
                if (Turn==ProbabilityType) {GotABattleLandThisTurn=true; ThisLandEnteredTapped=true;}
            }
        }//end of the for-loop over the turns

        if (ProbabilityType>=3 && EnoughBasicsAtStartTurn) {Outcome=0;}
        if (ProbabilityType>=3 && !EnoughBasicsAtStartTurn) {Outcome=1;}

        return Outcome;

    }//end of SimulateGame

}

class OpeningHand {
    int NumberOfBattleLands;
    int NumberOfFetchLands;
    int NumberOfBasicLands;
    int NumberOfOtherLands;
    int NumberOfSpells;

    int NrOfCards(){
        return NumberOfBattleLands+NumberOfFetchLands+NumberOfBasicLands+NumberOfOtherLands+NumberOfSpells;
    }

    void SetHand (int Nr1, int Nr2, int Nr3, int Nr4, int Nr5) {
        NumberOfBattleLands=Nr1;
        NumberOfFetchLands=Nr2;
        NumberOfBasicLands=Nr3;
        NumberOfOtherLands=Nr4;
        NumberOfSpells=Nr5;
    }

}//end of OpeningHand

class Deck {
    int NumberOfBattleLands;
    int NumberOfFetchLands;
    int NumberOfBasicLands;
    int NumberOfOtherLands;
    int NumberOfSpells;

    void SetDeck (int Nr1, int Nr2, int Nr3, int Nr4, int Nr5) {
        NumberOfBattleLands=Nr1;
        NumberOfFetchLands=Nr2;
        NumberOfBasicLands=Nr3;
        NumberOfOtherLands=Nr4;
        NumberOfSpells=Nr5;
    }

    int NrOfCards(){
        return NumberOfBattleLands+NumberOfFetchLands+NumberOfBasicLands+NumberOfOtherLands+NumberOfSpells;
    }

    int DrawCard (){
        Random generator = new Random();
        int CardType=0;
        int RandomIntegerBetweenOneAndDeckSize=generator.nextInt( this.NrOfCards() )+1;
        int OneCutoff=NumberOfBattleLands;
        int TwoCutoff=OneCutoff+NumberOfFetchLands;
        int ThreeCutoff=TwoCutoff+NumberOfBasicLands;
        int FourCutoff=ThreeCutoff+NumberOfOtherLands;
        int FiveCutoff=FourCutoff+NumberOfSpells;

        if (RandomIntegerBetweenOneAndDeckSize<=OneCutoff) {CardType=1; this.NumberOfBattleLands--;}
        if (RandomIntegerBetweenOneAndDeckSize>OneCutoff && RandomIntegerBetweenOneAndDeckSize<=TwoCutoff) {CardType=2; this.NumberOfFetchLands--;}
        if (RandomIntegerBetweenOneAndDeckSize>TwoCutoff && RandomIntegerBetweenOneAndDeckSize<=ThreeCutoff) {CardType=3; this.NumberOfBasicLands--;}
        if (RandomIntegerBetweenOneAndDeckSize>ThreeCutoff && RandomIntegerBetweenOneAndDeckSize<=FourCutoff) {CardType=4; this.NumberOfOtherLands--;}
        if (RandomIntegerBetweenOneAndDeckSize>FourCutoff && RandomIntegerBetweenOneAndDeckSize<=FiveCutoff) {CardType=5; this.NumberOfSpells--;}
        return CardType;
    }

}//end of Deck