要将字符串值用作变量名

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();}