如何将一个类中的一个方法的返回值连接到另一个类中的另一个方法？

Question

我试图让类方法playerTurn与另一个类进行交互。

import java.util.*;

public boolean PlayerTurn(){

    System.out.println("To determine who goes first, I am thinking of a number between 1 and 5, including 1 and 5.");
    int comp1 = rand.nextInt(5)+1;
    System.out.println(player1+", input guess: ");
    int g1 = scan.nextInt();
    System.out.println(player2+", input guess: ");
    int g2 = scan.nextInt();

    int p1 = Math.abs (comp1 -g1);
    int p2 = Math.abs(comp1-g2);
if(p1<p2){

    System.out.println("The number was "+comp1+". " +player1+", will go first.");

    return true ;



}
else 
    System.out.println("The number was "+comp1+". "+player2+", will go first.");
    return true;


}

它打印出正确的东西，但我需要它来连接它。如果为true，则第一个是第一个if语句，但是它甚至没有运行，而是返回到PlayerTurn方法，即使它没有被第二次调用：

public class fullCard {
     ArrayList<Integer>cardDraw1 = new ArrayList<Integer>(12);
     ArrayList<Integer>cardDraw2 = new ArrayList<Integer>(12);
     Random rand = new Random();
    Scanner scan = new Scanner(System.in);
    Intro test = new Intro();
    Player p = new Player();

int MysteryCard, ans1, ans2;
int total1, total2, newHighCard, newLowCard;

public fullCard(){

    int total1= 0, total2= 0;
    int newHighCard=0;
    int newLowCard=0;
    MysteryCard = rand.nextInt(13)+1;
}


public String MysteryDeck(){

for(int i =0; i<12; i++){   
    System.out.println("Why");<--this prints
    if(p.PlayerTurn())//DOES NOT WORK AT ALL
        System.out.print(" Player 1   Type 1 to pick from a deck higher than the MysteryCard and Type 2 to draw from a deck lower.");
        ans1 = scan.nextInt();
        if(ans1 ==1)
            System.out.println("You have chosen to pick from cards between"+MysteryCard+" and 13");
            for(int k= 0; k < cardDraw1.size(); k++)
                newHighCard = rand.nextInt(13-MysteryCard)+(MysteryCard+1);
                cardDraw1.add(newHighCard);
            for(int v=0; v<cardDraw1.size(); v++)
                total1+=cardDraw1.get(v);
                System.out.println(total1);

        if(ans1== 2)
            System.out.println("You will draw from a deck 1 to "+MysteryCard);
            for(int k= 0; k<cardDraw1.size();k++)
                newLowCard = rand.nextInt(MysteryCard+1)+1;
                cardDraw1.add(newLowCard);

            for (int v=0; v<cardDraw1.size(); v++)
                total1+=cardDraw1.get(v);
        System.out.println(total1);



    if(!p.PlayerTurn())
        System.out.println("Player 2  Type 1 to pick from a deck higher than the MysterCard and type 2 to draw from a deck lower than the MysteryCard.");
        ans2=scan.nextInt();    
        if(ans2 ==1)
            System.out.println("You have chosen to pick from cards between "+MysteryCard+" and 13");
            for(int k= 0; k<cardDraw2.size(); k++)
                newHighCard = rand.nextInt(13-MysteryCard)+(MysteryCard+1);
                cardDraw2.add(newHighCard);

            for(int d = 0; d<cardDraw2.size(); d++)
                total2 +=cardDraw2.get(d);

                System.out.println(total2);
        if(ans2== 2)
            System.out.println("You will draw from a deck 1 to "+MysteryCard);
            for(int k= 0; k<cardDraw2.size(); k++)
                newLowCard = rand.nextInt(MysteryCard+1)+1;
                cardDraw2.add(newLowCard);
                System.out.println(cardDraw2);
}   

return ("");

}

}

Answer 1

您忘记在T方法中为{}添加else block。

PlayerTurn()

如果您希望同时执行多条指令，请务必在代码的其余部分添加else { // add this System.out.println("The number was "+comp1+". "+player2+", will go first."); return true; } // and this {}和if block以及else block。

例如，让我们获取这段代码

for loop block

此处if(ans1 ==1) System.out.println("You have chosen to pick from cards between"+MysteryCard+" and 13"); for(int k= 0; k < cardDraw1.size(); k++) newHighCard = rand.nextInt(13-MysteryCard)+(MysteryCard+1); cardDraw1.add(newHighCard); for(int v=0; v<cardDraw1.size(); v++) total1+=cardDraw1.get(v); System.out.println(total1); 只会执行System.out.println("You have chosen to pick from cards between"+MysteryCard+" and 13");。

我认为你想按照以下步骤（添加ans1 ==1）

{}

所以这是整个 if(ans1 ==1) { //add this System.out.println("You have chosen to pick from cards between"+MysteryCard+" and 13"); for(int k= 0; k < cardDraw1.size(); k++) newHighCard = rand.nextInt(13-MysteryCard)+(MysteryCard+1); cardDraw1.add(newHighCard); for(int v=0; v<cardDraw1.size(); v++) total1+=cardDraw1.get(v); System.out.println(total1); }// ans this 方法，我添加了你错过的MysteryDeck()。

{}