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Exception in thread "main" java.util.regex.PatternSyntaxException: Unclosed character class near index 0 [ ^

时间:2016-10-16 00:50:43      阅读:303      评论:0      收藏:0      [点我收藏+]

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Exception in thread "main" java.util.regex.PatternSyntaxException: Unclosed character class near index 0 [ ^

出现此错误应该是字符转义出现问题:

System.out.println(str.replaceAll("[", "22"));
解决方案:在[之前加上\\
System.out.println(str.replaceAll("\\[", "22"));

Exception in thread "main" java.util.regex.PatternSyntaxException: Unclosed character class near index 0 [ ^

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原文地址:http://www.cnblogs.com/wangchaoyuan/p/5965460.html

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