我尝试做的基本上是迭代我的流派，使用我的hashmap作为查找表，然后在创建对象时选择流派。我不知道下一步需要做什么，因为当我已经有了一个新的构造函数时，它总是给我关于创建新构造函数的错误。

import java.util.HashMap;
import java.util.Scanner;

public class disc {
   private String title;
   private String releaseDate;
   HashMap<Integer, String> genre = new HashMap<Integer, String>();
   Scanner mainInput = new Scanner(System.in);

    public disc(String releaseDate, String title, HashMap<Integer, String> genre) {
        this.title = title;
        this.releaseDate = releaseDate;
        this.genre = genre;
        this.genre.put(1, "Horror");
        this.genre.put(2, "Action");
        this.genre.put(3, "Hip-Hop");
        this.genre.put(4, "Pop");
        this.genre.put(5, "Jazz");
        this.genre.put(6, "Thriller");
    }

子类：

import java.util.HashMap;

public class game extends disc{
    private int PEGIRating;
    private String Platform;
   public game(int PEGIRating, String Platform, String title, String releaseDate, HashMap<Integer, String> genre){
        super(releaseDate, title, genre);
        this.PEGIRating = PEGIRating;
        this.Platform = Platform;

        game g = new game(18,"PS5","Evil Within","Feb 2018",1);

    }
}