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以下示例将演示如何触发Unclosed character class异常: importjava.util.regex.Pattern;publicclassRegexExample{publicstaticvoidmain(String[]args){Stringregex="[abc";// 未关闭的字符类try{Pattern.compile(regex);}catch(PatternSyntaxExceptione){System.out.println("Exception occurred: "+e.getMessage());}}} ...
使用str.replaceAll("[【】]","")时,出现Unclosed character class near index 4 解决方法str.replaceAll("//[【】//]","")
Here is the error: Exception in thread "main" java.util.regex.PatternSyntaxException: Unclosed character class near index 3 ], [ ^ at java.util.regex.Pattern.error(Pattern.java:1924) at java.util.regex.Pattern.clazz(Pattern.java:2493) at java.util.regex.Pattern.sequence(Pattern.java:2030) ...
Exception in thread "main" java.util.regex.PatternSyntaxException: Unclosed character class near index 3 ], [ ^ at java.util.regex.Pattern.error(Pattern.java:1924) at java.util.regex.Pattern.clazz(Pattern.java:2493) at java.util.regex.Pattern.sequence(Pattern.java:2030) at java.util.regex....
simpletest("自[]由飞翔","[");//执行结果如下直接报错 Exception in thread"main"java.util.regex.PatternSyntaxException: Unclosed characterclass 如果要让元字符原样匹配,则需要用\转义元字符,JAVA中\\才表示普通字符串的\,所以为\\[ simpletest("自[]由飞翔","\\[");//执行结果如下[ ...
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 "Thread-4" java.util.regex.PatternSyntaxException: Unclosed character class near index 0 [ ^ at java.util.regex.Pattern.error(Unknown Source) at java.util.regex.Pattern.clazz(Unknown Source) at java.util.regex.Pattern.sequence(Unknown Source) at java.util.regex.Pattern.expr...
packagecom.company.project.demo020301;importjava.util.regex.Pattern;publicclassClient{publicstaticvoidmain(String[]args){Patternpattern=Pattern.compile("A][bc");System.out.println(pattern);}} 运行结果: Exceptionin thread"main"java.util.regex.PatternSyntaxException:Unclosedcharacterclassnear index4A][bc...
String error = "This is an unclosed string; 在这个例子中,第二个字符串字面量没有正确闭合,导致编译器抛出"未结束的字符文字"错误。 案例2:特殊字符的转义 1 2 3 4 String specialChars ="Line feed is \n and carriage return is \r"; // 错误的转义序列,会导致编译错误 String...