Java，使用類中的變量

Question

如何在另一個類中使用變量drawMax？

public int DrawNumberSetting (int drawMax) 
{ 
    System.out.print ("Please enter the maximum number of draws you want to play: "); 
    drawMax = scan.nextInt(); 
    return drawMax; 
} 

Answer 1

比方說你drawNumberSetting（INT drawMax）在A級。這意味着，具有A類的一個實例，任何其他類可以調用該方法，並使用返回值聲明。

class B 
{ 
    public void my otherMethod() 
    { 
     A a = new A(); 
     int drawMax = a.drawNumberSetting(5); 
    } 
} 

Answer 2

你可以把drawMax到類級變量，提供一個getter \存取方法，就像這樣：

private int drawMax; 

public void DrawNumberSetting() 
{ 
    System.out.print ("Please enter the maximum number of draws you want to play: "); 
    drawMax = scan.nextInt(); 
} 

public int getDrawMax() 
{ 
    return drawMax; 
}