如何使用某個類中的另一個類的方法？

Question

我在這裏有兩個類，在我的Player類中，我想從Scoresheet類中獲得總數。我不知道該怎麼做。

public class ScoreSheet { 

public int getOnes(ArrayList<Integer> die) 
{ 
    for (int i = 0; i < die.size(); i++) 
    { 
     if (die.get(i) == 1) 
     { 
      ones++; 
     } 
    } 
    return ones; 
} 


public class Player { 

private int ones = 0; 
private int twos = 0; 
private int threes = 0; 
private int fours = 0; 
private int fives = 0; 
private int sixes = 0; 
private int threeOfKind = 0; 
private int fourOfKind = 0; 
private int fullHouse = 0; 
private int smallStraight = 0; 
private int largeStraight = 0; 
private int yahtzee = 0; 
private int chance = 0; 



public void checkScores(ArrayList<Integer> die) 
{ 
    ones = Player -> ScoreSheet.getOnes(<Integer> die); // this is wrong, need to know 
                 // how to get total      
} 

Answer 1

Player類需要被初始化爲當前記錄表對象記錄表變量。可以通過構造函數參數或設置方法將變量設置爲正確的對象。玩家可以在需要時調用ScoreSheet變量中的getOnes(...)方法或其他ScoreSheet方法。 「