java.time.Matcher.end(int group)方法返回在上一次匹配操作期间给定组捕获的子序列的最后一个字符之后的偏移量。
int end(int group) - 声明
以下是 java.time.Matcher.end(int group)方法的声明。
public int end(int group)
group - 该匹配器模式中捕获组的索引。
int end(int group) - 返回值
组捕获的最后一个字符之后的偏移量；如果匹配成功，但组本身不匹配任何内容，则为-1。
int end(int group) - 异常
IllegalStateException - 如果尚未尝试匹配，或者先前的匹配操作失败。
IndexOutOfBoundsException - 如果模式中没有具有给定索引的捕获组。
int end(int group) - 示例
下面的示例显示java.time.Matcher.end(int group)方法的用法。
package com.learnfk;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class MatcherDemo {
private static String REGEX = "(a*b)(foo)";
private static String INPUT = "aabfooaabfooabfoob";
private static String REPLACE = "-";
public static void main(String[] args) {
Pattern pattern = Pattern.compile(REGEX);
</span><span class="com">//获取匹配器对象</span><span class="pln">
</span><span class="typ">Matcher</span><span class="pln"> matcher </span><span class="pun">=</span><span class="pln"> pattern</span><span class="pun">.</span><span class="pln">matcher</span><span class="pun">(</span><span class="pln">INPUT</span><span class="pun">);</span><span class="pln">
</span><span class="kwd">while</span><span class="pun">(</span><span class="pln">matcher</span><span class="pun">.</span><span class="pln">find</span><span class="pun">())</span><span class="pln"> </span><span class="pun">{</span><span class="pln">
</span><span class="com">//在匹配的最后一个字符之后打印偏移量。</span><span class="pln">
</span><span class="typ">System</span><span class="pun">.</span><span class="kwd">out</span><span class="pun">.</span><span class="pln">println</span><span class="pun">(</span><span class="str">"Second Capturing Group, (foo) Match String end(): "</span><span class="pun">+</span><span class="pln">matcher</span><span class="pun">.</span><span class="kwd">end</span><span class="pun">(</span><span class="lit">1</span><span class="pun">));</span><span class="pln">
</span><span class="pun">}</span><span class="pln">
}
}
让无涯教程编译并运行以上程序，这将产生以下输出-
Second Capturing Group, (foo) Match String end(): 3 Second Capturing Group, (foo) Match String end(): 9 Second Capturing Group, (foo) Match String end(): 14
