java - BiMap 单个函数将值转换为连接字符串值？

Question

是否有等效于从位图中获取所有键（或逆）并将每个键与特殊字符连接为全新字符串的方法（无需遍历映射并手动构建它？

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

也许你想看看Google Guava libraryJoiner的类。

Answer 2

假设这是番石榴BiMap，这只是

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