尽管Java的contains方法默认是区分大小写的,但是我们可以使用正则表达式来创建一个不区分大小写的contains方法。 importjava.util.regex.Pattern;publicclassContainsIgnoreCase{publicstaticbooleancontainsIgnoreCase(Stringstr,StringsearchStr){Patter
Stringstr1="Hello, World!";Stringstr2="hello";Patternpattern=Pattern.compile(Pattern.quote(str2),Pattern.CASE_INSENSITIVE);Matchermatcher=pattern.matcher(str1);booleancontainsIgnoreCase=matcher.find();System.out.println("Contains: "+containsIgnoreCase); 1. 2. 3. 4. 5. 6. 7. 8. 9. 代码的...
Pattern.CASE_INSENSITIVE).matcher(source).find();编辑：如果S2包含regex特殊字符(其中有很多)，那么首...
最常见的操作之一是使用contains()测试成员归属性,但也有一些其它操作 能够产生每个元素都唯一的列表是相当有用的功能。 排序是按字典顺序(lexicographically)完成的,因此大写和小写字母位于不同的组中。如果想按字母顺序(alphabetically)对其进行排序,可以向TreeSet构造器传入String.CASE_INSENSITIVE_ORDER比较器. Map 将对...
官网地址:https://docs.mongodb.com/manual/reference/operator/query/regex/#regex-case-insensitive 举个例子来说:现在有以下集合...还有一个情形是:匹配规则中使用了锚,所谓的锚就是^ 开头, $ 结束 比如:db.products.find( { description: { $regex: /^S/, $options: 'm'...} } ) 上面匹配规则的...
String accept = request.getHeader("accept"); // "accept" is case insensitive if (accept != null && accept.contains("json")) json = true; Novels类中包含了 toJson 方法,可以将 XML 转换成 JSON: public String toJson(String xml) { // option for requester try { JSONObject jobt = XML...
NOTE: Keystore type designations are case-insensitive. For example, "jks" would be considered the same as "JKS".There are two other types of keystores that come with the JDK implementation."jceks" is an alternate proprietary keystore format to "jks" that uses Password-Based Encryption with...
Pattern p = Pattern.compile(regex,Pattern.CASE_INSENSITIVE | Pattern.DOTALL); return p.matcher(dest).matches(); } 这种方式在代码层面简单明了,但是性能非常差,多次replace的使用就已经进行了多次遍历,这里有个可以优化的点,对于单个字符做替换可以选择用replaceChars(str, searchChar, replaceChar)这个方案。
//通过两层比较,1:排序(升序) ,2:字母顺序排序. 使用thenComparing()Collections.sort(list,Comparator.comparingInt(String::length).thenComparing(String.CASE_INSENSITIVE_ORDER)); thenComparing()方法源码如下 Copy /** * Returns a lexicographic-order comparator with another comparator. ...
Comparator<String> cmp = Comparator.comparingInt(String::length) .thenComparing(String.CASE_INSENSITIVE_ORDER); Parameters: other- the other comparator to be used when this comparator compares two objects that are equal. Returns: a lexicographic-order comparator composed of this and then the other ...