将 object 存储在对象数组中

Question

我正在尝试将学员 object 与培训 session object 联系起来，但出现此错误： TrainingSession cannot be converted to TrainingSession[] （在最后一行）

我不能使用数组列表或任何类似的东西，因为我必须在作业中遵循 UML 图。 我使用了以下变量sessionName 、 traineeNo和sessionNo来了解我正在处理的学员和培训 session。

public class Trainee extends Person {

    private TrainingSession [] ST;

    public TrainingSession [] getST() {
        return ST;
    }

    public void setST(TrainingSession [] ST) {
        this.ST = ST;
    }
}

public class TrainingSession {

    private int trainingSessionID;

    public int getTrainingSessionID() {
        return trainingSessionID;
    }

    public void setTrainingSessionID(int trainingSessionID) {
        this.trainingSessionID = trainingSessionID;
    }
}

public class TMS2 {

    public static void main(String[] args) 
            throws FileNotFoundException, ParseException {

        File file = new File("input.txt");
        Scanner read = new Scanner(file);
        Trainee [] trainee = new Trainee[15];

        int traineeID = read.nextInt();
        int trainingSessionID = read.nextInt();

        String sessionName = TrainingSession(trainingSession, trainingSessionID);
        int traineeNo = TraineeNo( trainee,  traineeID);
        int sessionNo = SessionNo( trainingSession,  sessionName);

        trainee[traineeNo].setST(trainingSession[sessionNo]);
    }
}

Answer 1

trainingSession[sessionNo]是TrainingSession object，而不是数组。

也许您正在寻找类似...

trainee[traineeNo].setST(new TrainingSession[] { trainingSession[sessionNo]});