MyMain
public class MyMain {
public static void main(String args[]) {
MyPool pool = new MyPool();
MyAlbum album = pool.getEmployee("TWIST", "サイコーな Rock You!");
if (album != null)
System.out.println(album.albumName + ", " + album.musicName);
album = pool.getEmployee("ROCK'N'ROLL", "トレジャー・ハンター");
if (album != null)
System.out.println(album.albumName + ", " + album.musicName);
album = pool.getEmployee("ONLY ONE", "ONLY ONE");
if (album != null)
System.out.println(album.albumName + ", " + album.musicName);
album = pool.getEmployee("TWIST", "Shake Me");
if (album != null)
System.out.println(album.albumName + ", " + album.musicName);
}
}
MyAlbum
public class MyAlbum {
public String albumName;
public String musicName;
public MyAlbum(String albumName) {
this.albumName = albumName;
}
}
MyPool
public class MyPool {
private Map<String, MyAlbum> pool;
public MyPool() {
pool = new HashMap<String, MyAlbum>();
pool.put("TWIST", new MyAlbum("TWIST"));
pool.put("ROCK'N'ROLL", new MyAlbum("ROCK'N'ROLL"));
}
public void putEmployee(MyAlbum album) {
pool.put(album.albumName, album);
}
public MyAlbum getEmployee(String albumName, String musicName) {
MyAlbum album = pool.get(albumName);
if (album != null) {
album.musicName = musicName;
}
return album;
}
}
実行結果
L:\>java MyMain
TWIST, サイコーな Rock You!
ROCK'N'ROLL, トレジャー・ハンター
TWIST, Shake Me