地址：正则表达式对JX8NET很有用 给定一段文章 查找hi这个单词
正则表达式对JX8NET很有用 给定一段文章，查找hi这个单词。
\bhi\b
3.我要找出这样的一个字符串，包含is,然后，在is后面跟着一个perfect。
\bis\b.*\bperfect\b
package com.pattern.test;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class PatternTest {
public static void main(String[] args) {
String pattern = "\\bis\\b.*\\bperfect\\b";
String testStr = "RegexBuddy is your perfect companion for working with regular expressions";
// pattern = args [0];
// testStr = args [1];
Matcher matcher = Pattern. compile(pattern).matcher(testStr);
if (matcher.find()) {
System. out.println("[" +testStr+"]" + " matches pattern " +"["+ pattern+"]" );
System. out.println("After replace,the new testStr is:[" + matcher.replaceFirst("TARGET" )+"]" );
System. out.println("the origl testStr is:[" + testStr+"]");
} else {
System. out.println("[" +testStr+"]" + " does not match pattern " + "["+ pattern+ "]");
}
}
}
-----
输出：
[RegexBuddy is your perfect companion for working with regular expressions] matches pattern [\bis\b.*\bperfect\b]
After replace,the new testStr is:[RegexBuddy TARGET companion for working with regular expressions]
the origl testStr is:[RegexBuddy is your perfect companion for working with regular expressions]
原文地址：https://www.jb51.cc/regex/361605.html
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