BiMap单一函数将值转换为串联字符串值？

Question

是否有相当于从位图中获取所有键（或反转）的东西，并将每个特殊字符作为一个全新的字符串连接（不迭代地图并手动构建它？

private static final BiMap<String, String> stuff = HashBiMap.create();
static {
    stuff.put("S1", "STUFF_TYPE_1");
    stuff.put("S2", "STUFF_TYPE_2");
    stuff.put("S3", "STUFF_TYPE_3");
} 

// The non-terminal <> is what I'm asking if something like exists either with bimap or some other container?
private static final String concateKeys = <stuff.getAllKeys().assignDelimiter("|").toString();>

然后concateKeys的值=“S1 | S2 | S3”

Answer 1

也许你想看一下Google Guava library的Joiner类。

Answer 2

假设这是一个番石榴BiMap，这只是

Joiner.on('|').join(stuff.keySet());