Question

我正在尝试接受多个用户输入（在这种情况下为字符串/名称），并将其存储到另一个类中的数组中
根据我的研究，许多建议使用列表而不是数组，但是在这种情况下，指定使用数组。
通过使用本来打算接收整数作为输入的代码，我能够解决问题，但是我已经进行了更改以接收字符串，但是，例如，在我输入的情况下，要输入3个名称，并且代码提示我输入名称，只允许输入2个
这是初始化数组的类

    public class Movie {
    private String id;
    private String name;
    private String description;
    private String[] genre;
    private String[] actors;
    private String[] language;
    private String countryOfOrigin;
    private Map<String, Integer> ratings;


    //Constructor
    public Movie(String id, String name, String description, String[] genre, String[] actors, String[] language, String countryOfOrigin, Map<String, Integer> ratings){
        this.id = id;
        this.name = name;
        this.description = description;
        this.genre = genre;
        this.actors = actors;
        this.language = language;
        this.countryOfOrigin = countryOfOrigin;
        this.ratings = ratings;
    }

    //setters
    public void setid(String id){
        this.id = id;
    }

    public void setname(String name){
        this.name = name;
    }

    public void setDescription(String description){
        this.description = description;
    }

    public void setGenre(String[] genre){
        this.genre = genre;
    }

    public void setActors(String[] actors){
        this.actors = actors;
    }    

//getters
    public String getId(){
        return id;
    }

    public String getName(){
        return name;
    }

    public String getDescription(){
        return description;
    }

    public String[] getGenre(){
        return genre;
    }

    public String[] getActors(){
        return actors;
    }

这是带有用于输入姓名的代码的主文件

public class Main{

    public static void main(String[] args) {
       //Scanner initialization
       Scanner input = new Scanner(System.in);

       System.out.println("How many actors star in this movie?: ");
            int num = input.nextInt();

            String array[] = new String[num];
            System.out.println("Enter the " + num + " actors starred now");

            for (int i = 0; i < array.length; i++){
                array[i] = input.nextLine();
            }
}

我的问题是我不确定是否需要先将值存储到本地数组“ array”中，然后将所述数组分配给类Movie actors数组，或者是否需要直接将值分配给类电影演员数组。如果是这样，我不确定该怎么做。
我的另一个问题是上面提到的一个问题，如果我输入了3个要存储的名称，则只能输入2个

Answer 1

我的问题是我不确定是否需要先将值存储到本地数组“ array”，然后将所述数组分配给Movie类 actors数组，或者如果我需要直接将值分配到类Movie actors数组。如果是这样，我不确定该怎么做。

执行以下操作：

import java.util.Arrays;
import java.util.Scanner;

class Movie {
    private String[] actors;
    private String director;
    private int year;

    Movie() {
    }

    public Movie(String[] actors, String director, int year) {
        this.actors = actors;
        this.director = director;
        this.year = year;
    }

    public String[] getActors() {
        return actors;
    }

    public void setActors(String[] actors) {
        this.actors = actors;
    }

    public String getDirector() {
        return director;
    }

    public void setDirector(String director) {
        this.director = director;
    }

    public int getYear() {
        return year;
    }

    public void setYear(int year) {
        this.year = year;
    }

    @Override
    public String toString() {
        return "Movie [actors=" + Arrays.toString(actors) + ", director=" + director + ", year=" + year + "]";
    }
}

public class Main {
    public static void main(String[] argv) throws Exception {
        // Scanner initialization
        Scanner input = new Scanner(System.in);

        System.out.print("How many actors star in this movie?: ");
        int num = Integer.parseInt(input.nextLine());

        String array[] = new String[num];
        System.out.println("Enter the " + num + " actors starred now");

        for (int i = 0; i < array.length; i++) {
            array[i] = input.nextLine();
        }

        System.out.print("Enter the name of the director:");
        String director = input.nextLine();

        System.out.print("Enter the release year:");
        int year = Integer.parseInt(input.nextLine());

        Movie movie1 = new Movie(array, director, year);

        // Alternatively
        Movie movie2 = new Movie();
        movie2.setActors(array);
        movie2.setDirector(director);
        movie2.setYear(year);

        // Display
        System.out.println(movie1);
    }
}

我的另一个问题是上述问题，如果我输入3个名字要存储，它只允许我输入2

使用Scanner::nextLine代替Scanner::nextInt。您面临的问题是因为将int输入之后的新行字符（Enter）分配给array[0]。检查Scanner is skipping nextLine() after using next() or nextFoo()?了解更多信息。

示例运行：

How many actors star in this movie?: 2
Enter the 2 actors starred now
James
Bond
Enter the name of the director:Xyz
Enter the release year:2010
Movie [actors=[James, Bond], director=Xyz, year=2010]

Answer 2

您可以通过多种方式解决此问题，因为您将数组参与者声明为私有，所以您将需要使用getter和setter方法来设置和获取数据。您还缺少构造函数。

 public class Movie
{
    private String[] actors;

public Movie(String[] actors)
{
    this.actors = actors;
}
public String[] getActors()
{
    return actors;
}

public void setActors(String[] actors)
{
    this.actors = actors;
}
}

然后，您可以简单地创建一个新对象Movies并将其放入数组中，如下所示：

 Movies movies = new Movies(array);
 System.out.println(Arrays.toString(anime.getActors()));

将所有参与者存储在数组中。

如何获取用户输入并将其存储到另一个类的数组中？ ||爪哇

2 个答案: