学期の最後のプロジェクトである宿題に行き詰まっています。Song クラスと MP3_Player クラスを含むプログラムを作成する必要があります。私が抱えている問題は、ユーザーからの入力を受け取り、それを arrayList に入れて出力することです。誰かが私を正しい方向に押しやるのを手伝ってくれませんか。
package program3;
import java.util.Scanner;
/**
*
* @author Seth
*/
public class Main {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
Scanner sc = new Scanner(System.in);
System.out.print("Enter the song's title:");
String title = sc.nextLine();
System.out.print("Enter the song's artist:");
String artist = sc.nextLine();
System.out.print("Enter the song's duration:");
float duration = sc.nextFloat();
System.out.print("Enter the size of the songs file: ");
int fileSize = sc.nextInt();
Song song = new Song(title, artist, duration, fileSize);
song.add(song);
for (int i = 0; i<song.length; i++){
System.out.println("Song " + i + " title is: " +
song.getTitle() + ", the artist is " +
song.getArtist() + " and the duration is " +
String.valueOf(song.getDuration()) + ".");
}
}
}
package program3;
import java.util.ArrayList;
/**
*
* @author Seth
*/
public class MP3_Player {
private int freeSpace;
private int storageCapacity;
ArrayList<Song> songList = new ArrayList<Song>();
public MP3_Player( )
{
storageCapacity = 10;
freeSpace = storageCapacity;
}
public MP3_Player(int storage)
{
storageCapacity = storage;
freeSpace = storageCapacity;
}
public String toString()
{
return "MP3 player with capacity " + storageCapacity +
", " + freeSpace + " left, contains:\n" +
songList.toString().replace("[","").replace("]","").replace(",","\n");
}
public int getFreeSpace()
{
return freeSpace;
}
public int getStorageCapacity()
{
return storageCapacity;
}
public ArrayList<Song> getSongList()
{
return songList;
}
public void setStorageCapacity(int newStorageCapacity)
{
storageCapacity = newStorageCapacity;
}
public void setFreeSpace(int newFreeSpace)
{
if (newFreeSpace >= 0) {
freeSpace = newFreeSpace;
}
}
public void addSong(Song s)
{
if(s.getFileSize() <= freeSpace)
{
songList.add(s);
System.out.println(s.getTitle() + " added to the MP3 player.");
freeSpace -= s.getFileSize();
}
else
{
System.out.println("Cannot add " + s.getTitle() +
" not enough free space.");
}
}
public void removeSong(Song s)
{
boolean songRemoval = false;
for (Song i : songList)
{
if(s.equals(i))
{
freeSpace += s.getFileSize();
songRemoval = true;
System.out.println(s.getTitle() +
" is removed from the MP3 Player.");
}
else if(s.equals(i))
{
System.out.println("This song isn't stored in the MP3 Player.");
}
}
if(songRemoval)
{songList.remove(s);
}
}
}