我是Java的新手，我正在构建一个项目，试图解析与用户交互的数据。 感到困惑的是，我解析的数据仍然保留在解析方法中，我不知道如何正确地创建对象并使用它。 我有三个类ethicalengine，场景，audit来处理数据。 我会让它尽可能的简单，任何帮助都是高度赞赏的。

我以前犯过这个错误如何使用ArrayList setter加载对象

但我仍然感到困惑，因为引用越来越复杂。

这里是我的主要类EthicalEngine的一部分，用于加载数据和用户交互。

private Audit audit = new Audit();
private Scenario scenario = new Scenario();
private ArrayList<Scenario> scenarios = new ArrayList<Scenario>();
private ArrayList<Character> passengers = new ArrayList<Character>();
private ArrayList<Character> pedestrians = new ArrayList<Character>();

public void loadCsv() throws IOException {
    // detail of parsing data to program
            try {
                //parsing data and save it to the proper ArrayList
                } else {
                    lineCount++;
                    throw new InvalidDataFormatException();
                }
            } catch (InvalidDataFormatException e) {
                System.out.println("WARNING: invalid data format in config file in line " + lineCount);
            }
        }
        // add the last round data
        // parsing data like this pattern
        scenario.setPassengers(passengers);
        scenario.setPedestrians(pedestrians);
        scenarios.add(scenario);

        scenario.setPassengers(passengers);
        scenario.setPedestrians(pedestrians);

        // use the audit object in the field area
        // trying to construct a new object, but failed
        audit = new Audit(scenarios);


        //data only survive here!!
        
        return;
    } catch (FileNotFoundException e) {
        System.out.println("ERROR: could not find config file.");
    }

}
public void interactConfig () throws IOException {
    //cannot get the loading data
    ArrayList<Scenario> scenarios = audit.getScenarios();
    ArrayList<Character> passengers = new ArrayList<Character>(); 
    ArrayList<Character> pedestrians = new ArrayList<Character>(); 

    do {
        for (Scenario scenario : scenarios) {
        
            audit.setAuditType("User Audit");          
            passengers = scenario.getPassengers();
            pedestrians = scenario.getPedestrians();
            System.out.println(scenario.toString());
        
            //some interaction with the Scenario and the Scanner class

        System.out.println("Would you like to continue? (yes/no)");
        playAgain = in.nextLine();
        
    } while (playAgain.equals("yes"));
       
}

以下是我的Audit类的一部分:

public class Audit {

/**
 * default constructor
 */
public Audit() {

}

/**
 * The constructor to get the ArrayList<Scenario>
 * @param ArrayList<Scenario>
 */
public Audit(ArrayList<Scenario> scenarios) {
    this.scenarios = scenarios;
}

以下是我的方案类的一部分:

public class Scenario {

private Random random;

private ArrayList<Character> passengers = new ArrayList<Character>();
private ArrayList<Character> pedestrians = new ArrayList<Character>();

private boolean legalCrossing;


/**
 * default constructor
 */
public Scenario() {

}

/**
 * Construct the scenario objects
 * 
 * @param passengers arrayList
 * @param pedestrians arrayList
 * @param legalCrossing boolean
 */
public Scenario(ArrayList<Character> passengers, ArrayList<Character> pedestrians, boolean legalCrossing) {
    this.passengers = passengers;
    this.pedestrians = pedestrians;
    this.legalCrossing = legalCrossing;
}

/**
 * The setter method to set the passenger arrayList
 * @param ArrayList<Charater> passengers
 */
public void setPassengers(ArrayList<Character> passengers) {
    this.passengers = passengers;
}

/**
 * The getter method to get the passengers arrayList
 * @return ArrayList<Character> passengers
 */
public ArrayList<Character> getPassengers() {
    return passengers;
}

/**
 * The setter method to set the pedestrians arrayList
 * @param ArrayList<Chracter> pedestrians
 */
public void setPedestrians(ArrayList<Character> pedestrians) {
    this.pedestrians = pedestrians;
}

/**
 * The getter method to get the pedestrian arrayList
 * @return pedestrian arrayList
 */
public ArrayList<Character> getPedestrians() {
    return pedestrians;
}