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){Patternpattern=Pattern.compile(searchStr,Pattern.CASE_INSENSITIVE);returnpattern.matche...
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...
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...
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...
CASE_INSENSITIVE_ORDER Ljava/util/Comparator; methods count: 94 <init> ()V <init> (Ljava/lang/String;)V <init> ([C)V <init> ([CII)V <init> ([III)V <init> ([BIII)V <init> ([BI)V checkBounds ([BII)V <init> ([BIILjava/lang/String;)V ...
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...
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 ...
A new system property namedjdk.security.allowNonCaAnchorhas been introduced to restore the previous behavior, if necessary. If the property is set to the empty String or "true" (case-insensitive), trust anchor certificates can be used if they do not have proper CA extensions. ...