Question

我想使用Set Collection作为我的问题类的成员来存储唯一的多个amswers

class Questions
{
   int id ;
   String question;
   Set<String> answers ;
}

但是Don不知道如何存储答案并从中检索答案任何人都可以通过提供相关的例子来帮助我吗？

Answer 1

问题类：

class Questions {

  private int id;
  private String question;
  private Set<String> answers;

  public int getId() {
    return id;
  }

  public void setId(int id) {
    this.id = id;
  }

  public String getQuestion() {
    return question;
  }

  public void setQuestion(String question) {
    this.question = question;
  }

  public Set<String> getAnswers() {
    return answers;
  }

  public void setAnswers(Set<String> answers) {
    this.answers = answers;
  }

}

<强>示例：

public class Sample {

  public static void main(String[] args) {
    Questions question = new Questions();
    question.setId(101);
    question.setQuestion("Random Question");

    Set<String> answer= new HashSet<String>();
    answer.add("random answer1");
    answer.add("random answer2");

    question.setAnswers(answer);

    //Similarly invoke getXXX to get the values
  }

}

使用Set Collection作为我的问题类的成员

1 个答案: