Java常规的espressions [英] Java regular espressions

问题描述

模式代码结果的代码matches = false为什么会搜索到原因

Code for pattern code result "matches = false" why cause searched is there

public class  Document{

    public static void main(String[] args) {

        String text    =
            "This is the text to be searched 45" +
            "for occurrences of the pattern.";

        
        String pattern = "searched";        

        boolean matches = Pattern.matches(pattern, text);

        System.out.println("matches = " + matches);
    }
}

我的尝试：



代码重构和搜索java docs

What I have tried:

code refactored and searched java docs

推荐答案

尝试：

Try:

public static void main (String[]args)
  {
    String text =
      "This is the text to be searched 45" +
      "for occurrences of the pattern.";
    String pattern = "(.*)searched(.*)";
    boolean matches = Pattern.matches (pattern, text);
    System.out.println ("matches = " + matches);
  }

这是一个确认OriginalGriff解决方案的链接。

Java中的Java.lang.String.matches（） - GeeksforGeeks [ ^ ]



只是一些有趣的链接帮助构建和调试RegEx。

以下是RegEx文档的链接：

perlre - perldoc.perl.org [ ^ ]

以下是帮助构建RegEx并调试它们的工具的链接：

.NET Regex Tester - Regex Storm [ ^ ]

Expresso正则表达式工具 [ ^ ]

RegExr：Learn，Build，&测试RegEx [ ^ ]

在线正则表达式测试器和调试器：PHP，PCRE，Python，Golang和JavaScript [ ^ ]

这个显示RegEx是一个很好的图表，它非常有助于理解RegEx的作用： Debuggex：在线可视正则表达式测试器。 JavaScript，Python和PCRE。 [ ^ ]

此网站还在一个漂亮的图表中显示正则表达式，但无法测试与RegEx匹配的内容： Regexper [ ^ ]

Here is a link that confirms OriginalGriff's solution.
Java.lang.String.matches() in Java - GeeksforGeeks[^]

Just a few interesting links to help building and debugging RegEx.
Here is a link to RegEx documentation:
perlre - perldoc.perl.org[^]
Here is links to tools to help build RegEx and debug them:
.NET Regex Tester - Regex Storm[^]
Expresso Regular Expression Tool[^]
RegExr: Learn, Build, & Test RegEx[^]
Online regex tester and debugger: PHP, PCRE, Python, Golang and JavaScript[^]
This one show you the RegEx as a nice graph which is really helpful to understand what is doing a RegEx: Debuggex: Online visual regex tester. JavaScript, Python, and PCRE.[^]
This site also show the Regex in a nice graph but can't test what match the RegEx: Regexper[^]

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