java - 使用正则表达式拆分字符串

Question

我正在尝试使用 split() 来获得此输出:

Colour = "Red/White/Blue/Green/Yellow/"
Colour = "Orange"

...但无法成功。我做错了什么？

基本上我匹配最后一个 / 并在那里拆分字符串。

String pattern = "[\\/]$";
String colours = "Red/White/Blue/Green/Yellow/Orange";

Pattern splitter = Pattern.compile(pattern);
String[] result = splitter.split(colours);

for (String colour : result) {
    System.out.println("Colour = \"" + colour + "\"");
}

Answer 1

您需要在最后 / 处拆分字符串。匹配最后一个 / 的正则表达式是:

/(?!.*/)

See it on IdeOne

解释:

/       : A literal /
(?!.*/) : Negative lookahead assertion. So the literal / above is matched only 
          if it is not followed by any other /. So it matches only the last /