Question

我已经制作了一个类似于此的程序

将玩家添加到数组
然后他们全部相互对抗（就像足球比赛一样，每支球队都会参加每支球队）
随后将其随机化
程序应显示最终结果（如果您赢得游戏，则获得3分）等。

我不断收到来自Eclipse的消息说＆＃34; .setScore尚未编码..

TestGame.java

public class TestGame {
    static Players ceri = new Players("Ceri", 0);

    static Players harry = new Players("Harry", 0);
    static Players matthew = new Players("Matthew", 0);
    static Players james = new Players("James",0);
    static Players kwok = new Players("Kwok",0);
    static Players lewis = new Players("Lewis",0 );
    static Game League = new Game();
    int Ceri = 0;

    public static void main(String[] args) {
        League.addPlayers(ceri);
        League.addPlayers(matthew);
        League.addPlayers(james);
        League.addPlayers(kwok);
        League.addPlayers(lewis);
        League.addPlayers(harry);
        League.randomize();
        League.Results();    
    }
}

Game.java

public class Game extends TestGame {

    Scanner s = new Scanner(System.in);
    private Players[] people = new Players[6];
    private int counter = 0;
    List<String> Matches = new ArrayList<String>();

    public void addPlayers(Players obj){
        people[counter] = obj;
        counter++;
        System.out.println(obj.getName());
    }

    public String randomize(){
        for(int i = 0; i < people.length; i++){
            for(int j = i + 1; j < people.length; j++){
                if(people[i].equals(people[j].getName())){                    
                    continue;
                } else {
                    Matches.add(people[i].getName() + " V " + people[j].getName());
                }
            }
        }
        return null;
    }

    public String Results(){
        while(!Matches.isEmpty()){
            int Game = (int)(Math.random() * Matches.size());
            String Verses = (String)Matches.get(Game);

            System.out.println(Verses);
            System.out.println("Who has won?");

            String name = s.nextLine();
            //**ISSUE LIES HERE**    

            if(Verses.contains(name)){
                if(name == "ceri"){
                    ceri.setScore(3);
                } else if(name == "harry"){
                    harry.setScore(3);
                }else if (name == "matthew"){
                    matthew.setScore(3)
                } else if(name == "lewis"){
                    lewis.setScore(3)
                }else if ( name == "james"){
                    james.setScore(3)
                }else if(name == "kwok"){
                    kwok.setScore(3);
                }
            }

            Matches.remove(Game);
            System.out.println(one);

            return null;

        }
        return null;
    }
}

ECLIPSE SAYS .setScore ISNT。

Players.java

public class Players {
    private String name;
    private int score;

    public Players(String name, int score){
        this.name = name;
        this.score = score;
    }

    public String getName(){
        return this.name;
    }

    public int getScore() {
        return this.score;
    }

    public void setScore(int score) {
        this.score =+ score;
    }
}

Answer 1

所有玩家都是TestGame类的静态成员。他们现在只能访问玩家的静态方法。这就是你收到错误的原因。

Answer 2

您的代码有几个问题，但它们都与setScore没有定义有关。

您在以下块中缺少分号。

if(Verses.contains(name)){
    if(name == "ceri"){
        ceri.setScore(3);
    } else if(name == "harry"){
        harry.setScore(3);
    }else if (name == "matthew"){
        matthew.setScore(3)
    } else if(name == "lewis"){
        lewis.setScore(3)
    }else if ( name == "james"){
        james.setScore(3)
        }else if(name == "kwok"){
        kwok.setScore(3);
    }
}

您没有在上面的块中使用equals进行字符串比较。

以下是更正后的版本：

if(Verses.contains(name)){
    if(name.equals("ceri")){
        ceri.setScore(3);
    } else if(name.equals("harry")){
        harry.setScore(3);
    } else if (name.equals("matthew")){
        matthew.setScore(3);
    } else if(name.equals("lewis")){
        lewis.setScore(3);
    } else if ( name.equals("james")){
        james.setScore(3);
    } else if(name.equals("kwok")){
        kwok.setScore(3);
    }
}

Answer 3

首先，有编译错误。请参阅merlin2011的答案以供参考。

关于你的实际问题，你的玩家（ceri，harry，matthew等）是TestGame的静态成员......但是没有公开曝光。这意味着其他对象无法看到它们，因此无法访问它们。将public关键字添加到其中：

public class TestGame {
    public static Players ceri = new Players("Ceri", 0);
    public static Players harry = new Players("Harry", 0);
    public static Players matthew = new Players("Matthew", 0);
    public static Players james = new Players("James",0);
    public static Players kwok = new Players("Kwok",0);
    public static Players lewis = new Players("Lewis",0 );

    ...
}

现在它们已公开曝光，您需要正确引用它们。当你拨打setScore(3)时，你的游戏类不知道什么是ceri，因为它不是那个类的成员。相反，你需要告诉它ceri所在的位置;在你的TestGame类中。作为参考，我还使用了传统的字符串相等比较函数。

if(name.equals("ceri")){
    TestGame.ceri.setScore(3);
}

将此格式用于您拥有的其他IF语句。

塞特被告知它没有被创建，但它有

3 个答案: