Question

我制作了一个程序，用于存储电影名称，时间和显示时间。我保存了输入到数组的详细信息，然后通过getter和setter方法将数组保存为记录。

在我的最终方法中，我尝试使用for循环打印出存储在记录中的详细信息，但不断出现错误。

对此问题的任何帮助将不胜感激。

//Demonstrates usage of loops/adt/gettersetters

import java.util.Scanner;

class movies {
    public static void main(String[] p) {
        Movie m = new Movie();

        int[] screenn = new int[4];
        int[] namee = new int[4];
        int[] hourr = new int[4];
        int[] minn = new int[4];

        for (int i = 0; i < 4; i++) {
            screenn[i] = i + 1;
            String moviename = input("Film for screen " + (i + 1));
            namee[i] = moviename;
            int moviehour = inputint("what hour does it start?");
            hourr[i] = moviehour;
            int moviemin = inputint("what min does it start?");
            minn[i] = moviemin;
        }
        sethour(m, namee);
        setmin(m, minn);
        setscreen(m, screen);
        setname(m, namee);

        showtime(m);
        System.exit(0);
    }

    //Getter Method
    public static String[] getname(Movie m) {
        return m.name;
    }

    public static int[] getscreen(Movie m) {
        return m.screen;
    }

    public static int[] gethour(Movie m) {
        return m.hour;
    }

    public static int[] getmin(Movie m) {
        return m.min;
    }

    //Setter Method
    public static Movie sethour(Movie m, int[] hour) {
        m.hour = hour;
        return m;
    }

    public static Movie setmin(Movie m, int[] min) {
        m.min = min;
        return m;
    }

    public static Movie setname(Movie m, String[] name) {
        m.name = name;
        return m;
    }

    public static Movie setscreen(Movie m, int[] screen) {
        m.screen = screen;
        return m;
    }

    public static String input(String message) {
        Scanner scanner = new Scanner(System.in);

        print(message);
        String answer = scanner.nextLine();
        return answer;
    }

    public static String print(String message) {
        System.out.println(message);
        return message;
    }

    public static int inputint(String message) {
        int number = Integer.parseInt(input(message));
        return number;
    }

    public static void showtime(movie m) {
        print("Cineworld Movies For Tonight");
        for (int i = 0; i < 4; i++) {
            print("");
            print(m.screen[i]);
            print(m.movie[i]);
            print(m.hour[i]);
            print(m.min[i]);
        }
    }
}

class Movie {
    String[] name = new String[4];
    int[] hour = new int[4];
    int[] min = new int[4];
    int[] screen = new int[4];
}

Answer 1

你的作业错了。根据OOP，Movie类应存储Movie的属性（名称，小时，分钟等），然后在MainProgram上存储一系列电影。如何创建和使用这些对象并不是它自己的类所关注的。话虽如此，我重新将你的mainProgram实现为：

询问每个（4）电影属性。
制作电影。
将其添加到电影列表中。
为每部电影（4）打印其属性。

MovieClass：

public class Movie
{
    String name;
    int hour , min , screen;

    public Movie ( )
    {
        super ( );
    }


    public Movie ( String name , int hour , int min , int screen )
    {
        super ( );
        this.name = name;
        this.hour = hour;
        this.min = min;
        this.screen = screen;
    }



    public String getName ( )
    {
        return name;
    }

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

    public int getHour ( )
    {
        return hour;
    }

    public void setHour ( int hour )
    {
        this.hour = hour;
    }

    public int getMin ( )
    {
        return min;
    }

    public void setMin ( int min )
    {
        this.min = min;
    }

    public int getScreen ( )
    {
        return screen;
    }

    public void setScreen ( int screen )
    {
        this.screen = screen;
    }

    @Override
    public String toString ( )
    {
        return "Movie [name="   + name + ", hour=" + hour + ", min=" + min + ", screen=" + screen
                + "]";
    }



}

MainProgram（主程序）：

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

    public class MainProgram
    {

        public static void main ( String [ ] args )
        {
            List < Movie > movieList = new ArrayList < Movie > ( );

            for(int i = 1; i <= 4; i++ )
            {

                int screen = i;
                String name = inputString ( "Film for screen "+(i));
                int hour = inputInt ("what hour does it start?");
                int min = inputInt ("what min does it start?");

                Movie movie = new Movie ( name , hour , min , screen );
                movieList.add ( movie );
            }

            print("Cineworld Movies For Tonight");

            for( Movie movie : movieList)
            {
                print ( "" );
                print ( Integer.toString ( movie.getScreen ( ) ));
                print (movie.getName ( ));
                print (Integer.toString ( movie.getHour ( ) ));
                print ( Integer.toString ( movie.getMin ( ) ));
            }

        }

        public static String inputString ( String message )
        {
            Scanner scanner = new Scanner ( System.in );
            print ( message );
            String answer = scanner.nextLine ( );
            return answer;
        }

        public static String print ( String message )
        {
            System.out.println ( message );
            return message;
        }

        public static int inputInt ( String message )
        {
            int number = Integer.parseInt ( inputString ( message ) );
            return number;
        }


    }

注意：正如您所看到的，我重新使用了一些静态方法，但如果您需要其他东西，则必须自己实施。

I / O示例：

Film for screen 1
The Shawshank Redemption
what hour does it start?
19
what min does it start?
30
Film for screen 2
The Godfather
what hour does it start?
20
what min does it start?
15
Film for screen 3
The Godfather: Part II
what hour does it start?
20
what min does it start?
30
Film for screen 4
The Dark Knight
what hour does it start?
21
what min does it start?
15
Cineworld Movies For Tonight

1
The Shawshank Redemption
19
30

2
The Godfather
20
15

3
The Godfather: Part II
20
30

4
The Dark Knight
21
15

希望它有所帮助。

尝试使用循环从Array中检索索引

1 个答案:

MovieClass：

MainProgram（主程序）：

I / O示例：