Java 正则表达式替换问题

Question

我有以下代码...

private static final String REGEX_TEAMSPLIT =
 "([0-9]*)\\s-\\s([A-Z,a-z][a-z,\\s,A-Z]*)";
...
String reg = teamNames.get(0).html();
//reg == '62401 - Breakers'
teamNumber = reg.replace(REGEX_TEAMSPLIT, "$1");
//teamNumber == '62401 - Breakers'

现在我假设根据我在网上阅读的内容，这只会给我留下第一组。但正如您所见，情况并非如此。有人可以告诉我缺少什么吗？

Answer 1

你应该使用 replaceAll而不是 replace . (replace方法不会将第一个参数解释为正则表达式，而是按字面匹配)

String REGEX_TEAMSPLIT = "([0-9]*)\\s-\\s([A-Z,a-z][a-z,\\s,A-Z]*)";
String reg = "62401 - Breakers";
String teamNumber = reg.replaceAll(REGEX_TEAMSPLIT, "$1");
System.out.println(teamNumber); // => 62401