当前在游戏中,它会询问某些问题,例如,您是否已收集了所有钥匙,杀死了所有老板等?
但是,当它接近结尾时,它会问“您想使用哪个密钥?”。它做得很好,但是一旦到达“门”部分,它实际上并没有获得键的值,它只会输出0

主要代码

public static int possibleKey()
{
    SetnGet sng = new SetnGet();
    int keys;
    do
    {
        System.out.println("Which key would you like to use?");
        keys = in.nextInt();
         }
     while(keys != 1 && keys != 2 && keys != 3);

    return keys;
}

public static int possibleLevel()
{
    SetnGet sng = new SetnGet();
    System.out.println("Which door would you like to enter? - 1, 2, 3 or 4");
    int level;

    if(sng.accessibleKey() == 3)
    {
        do
        {
            System.out.println("You have all three keys, you have complete access");
            level = in.nextInt();
        }
        while(level != 1 && level != 2 && level != 3);
    }
    else
    {
        do
        {
            System.out.println("You have no level access");
            level = in.nextInt();
        }
        while(level != 1 && level != 2 && level != 3 && level != 4);

    }
    return level;
}


设置并从SetnGet类获取

private int possibleKey;
private int possibleLevel;

public int setPossibleKey()
{
    return possibleKey;
}

public void setPossibleKey(int possibleKey)
{
    this.possibleKey = possibleKey;
}

public int getPossibleLevel()
{
    return possibleLevel;
}

public void setPossibleLevel(int possibleLevel)
{
    this.possibleLevel = possibleLevel;
}

最佳答案

方法possibleLevel()创建SetnGet类(SetnGet sng = new SetnGet();)的实例,然后,立即读取实例(int)的类型sng.accessibleKey()的字段。这样读取的结果当然为0,因为这是int类字段的默认值,并且您从未为该字段设置任何其他值。结果,您总是转到else并看到“您没有级别访问权限”消息。

解决该问题的方法是将SetnGet sng = new SetnGet();possibleLevel()移至该类,然后确保将possibleKey()调用的结果设置为该值,如下所示:

public class Main {

    private static Scanner in = new Scanner(System.in);

    private static SetnGet sng = new SetnGet();

    public static void main(String[] args) {
        int selectedKey = possibleKey();
        sng.accessibleKey(selectedKey);
        int level = possibleLevel();
    }

    public static int possibleKey() {
        // your initial implementation of the method
    }

    public static int possibleLevel() {
        // your initial implementation of the method, but
        // without the "SetnGet sng = new SetnGet();" line
    }
}


SetnGet类如下所示:

class SetnGet {

    private int accessibleKey;

    int accessibleKey() {
        return accessibleKey;
    }

    void accessibleKey(int accessibleKey) {
        this.accessibleKey = accessibleKey;
    }
}


这将解决您的最初问题。然后,您可以考虑对代码进行进一步的重构,例如,使用方法参数(而不是共享的类字段)在方法之间传递数据,还摆脱SetnGet sng = new SetnGet();方法中的冗余possibleKey()行,等等。

10-08 01:33