要将字符串值用作变量名

Question

是否可以使用String作为变量名。

String musicPlaying = "music2";
Music music1 = new Music("blaalla");
Music music2 = new Music("blalala");
Music music3 = new Music("balaada");

if(!musicPlaying.stillPlaying) { // As you can see i am using string as a variable name.
  changeMusic();
}

Answer 1

您可以做的是将这些值关联（映射）到Music对象。这是示例：

Map<String, Music> musics = new HashMap<>();
String musicPlaying = "music2";
musics.put("music1", new Music("blaalla"));
musics.put("music2", new Music("blalala"));
musics.put("music3", new Music("balaada"));

if(!musics.get(musicPlaying).stillPlaying) { // As you can see i am using string as a variable name.
  changeMusic();
}