正则表达式-捕获组

在正则表示式中使用括号扩起来的内容可以作为捕获组，捕获组对象

public static void main(String[] args) {

 Pattern pattern = Pattern.compile("(a)(bc)");

 Matcher matcher = pattern.matcher("abc");


 System.out.println(matcher.matches());

 System.out.println(matcher.group(1));
 System.out.println(matcher.group(2));

 int i = matcher.groupCount();
 System.out.println(i);

}

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