java.util.regex.Pattern.pattern()方法返回从中编译此模式的正则表达式。
String pattern() - 声明
public String pattern()
String pattern() - 返回值
此模式的来源。
String pattern() - 示例
下面的示例显示java.util.regex.Pattern.pattern()方法的用法。
package com.learnfk;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class PatternDemo {
private static final String REGEX = "(.)(\d+)(.)?# 3 capturing groups";
private static final String INPUT = "This is a sample Text, 1234, with numbers in between.";
public static void main(String[] args) {
//创建一个模式
Pattern pattern = Pattern.compile(REGEX,Pattern.COMMENTS);
</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="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="pln">pattern</span><span class="pun">.</span><span class="pln">pattern</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-
(.*)(\d+)(.*)?# 3 capturing groups
