使用字符串值作为变量名称 [英] To use a string value as a variable name

问题描述

可以使用String作为变量名吗..就像在这个例子中一样 -

Is it possible to use String as a variable name.. like in this example -

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();
}

推荐答案

你可以做的是将这些值关联（映射）到Music对象。以下是示例：

What you can do is by associating (mapping) those values to the Music object. Here is example:

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();
}

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