java - 通过在java中放入列表来设置和获取数据循环

Question

我有for循环，我可以在其中获取数据发送到不同类中的其他方法

UserManagerImpl.java

for (User user: userList) {
                surveyModel survey = new SurveyModel();
                survey.setSurveyData(Id, comment, serveyScore, grade);
            }

在其他类中，我已经设置并获取创建数据列表，然后想通过 get 方法获取它。

调查模型.java

public class SurveySentimentModel {
    public static String delimiter = "|||"; 
    private List scores = new ArrayList();
    private List negativeData = new ArrayList();
    private List PositiveData = new ArrayList();


    public void setSurveyData(String Id, String comment, double Score, String grade) {
        //want to add score to scores list
        //if grade positive add to positive list or else negative after delimiting  
    }
        public double getTotalScore() {
        //calculate the sum of scores
        return totalScore;
    }


public String getTotalSentimentgrade() {
        if (totalScore> 0) {
            return "Positive";
        }
        return "Negative";
    }

    public List getSurveyData() {
        //Want to merge list - first negative and then positive
        return new ArrayList();
    }
}

SurveyModel.java

private String grade;
private Number Score;
private String Id;
private String comment;

public SurveyModel(String Id, String comment, double Score, String grade) {
    this.grade= grade;
    this.Score= Score;
    this.comment = comment;
    this.Id = Id;
}
public SurveyModel() {
    // TODO Auto-generated constructor stub
}

//getter 和 setter

在这里我想要

1.) Add score to scores list 
2.) want to add graddes to list by negative first with delimiter then positive.
3.) want to get total score.

我怎样才能达到我的要求。我是java新手，请帮助我。

Answer 1

这里有一个建议:

这是模型类:

    public class SurveySentimentModel {
        public static String delimiter = "|||"; 
        private List<SurveyModel> scores = new ArrayList();
        private List<SurveyModel> negativeData = new ArrayList();
        private List<SurveyModel> positiveData = new ArrayList();


        public void setSurveyData(String Id, String comment, double score, String grade) {
            SurveyModel survey =  new SurveyModel(id, comment, score, grade );
            scores.add(survey)
            if(score >= 0){
              positiveData.add(survey);
            }else{
              negativeData.add(survey);
            }
        }
        public double getTotalScore() {
            double sum = 0;
            for(SurveyModel s: scores){
                sum += s.getScore();
            }
            return sum;
        }
        public List getSurveyData() {
            List<SurveyModel> joined = new ArrayList(negativeData);
            joined.addAll(positiveData)
            return joined;
        }
    }

这是循环:

SurveySentimentModel sentiments = new SurveySentimentModel();
for (User user: userList) {
      sentiments.setSurveyData(user.getId(), user.getComment(), user.getSurveryScore(), user.getGrade());
}