test java String.matches again

最新推荐文章于 2025-09-09 08:37:13 发布

转载最新推荐文章于 2025-09-09 08:37:13 发布 · 56 阅读

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#java

本文探讨了Java中字符串匹配正则表达式的原理及常见陷阱，特别关注使用正则表达式进行匹配时可能导致的部分字符串无法正确匹配的问题，并提供了解决方案。

i found the String.matches must match the whole string,could not match part of string

http://stackoverflow.com/questions/4771447/java-string-matches-regex-with-or-pipe

this is a trap

package ZZZZ;

import java.util.regex.PatternSyntaxException;

public class cc {

    public static void main(String[] args) {

        String subjectString="我__";
        // TODO Auto-generated method stub
        try {
            String regex="[^a-zA-Z0-9]*$";

            boolean foundMatch = subjectString.matches(regex);
            System.out.println(foundMatch);
        } catch (PatternSyntaxException ex) {
            // Syntax error in the regular expression
            System.out.println(ex.toString());
        }

    }

}