String str ="graap-banner-top-";intindex = str.indexOf("a",5); System.out.println(index); 运行结果:7 5)substring(int beginIndex) 从beginIndex开始位置截取字符串 String str ="graap-banner-top-"; String substring= str.substring(1); System.out.println(substring); 运行结果:raap-banner-top-...
Determine if a small string is a substring of another large string. Return the index of the first occurrence of the small string in the large string. Return -1 if the small string is not a substring of the large string. Assumptions Both large and small are not null If small is empty s...
String sourceStr="There is a string accessing example.";//获得字符串长度int len=sourceStr.length();//获得索引位置16的字符char ch=sourceStr.charAt(16);//查找字符和子字符串int firstChar1=sourceStr.indexOf('r');int lastChar1=sourceStr.lastIndexOf('r');int firstStr1=sourceStr.indexOf("...
String str2 = str1.substring(2);//str2 = "dfzxc" String str3 = str1.substring(2,5);//str3 = "dfz" 123 1 2 3 1.4、字符串比较 1)public int compareTo(String anotherString)//该方法是对字符串内容按字典顺序进行大小比较,通过返回的整数值指明当前字符串与参数字符串的大小关系。若当前对...
set of data when we look at first two records for same user name, for same address we have two reports ran in two instances. that why we have two different subject_key values. but when look at reports_ran data [rep1] is substring of [rep1][rep2]. so i want to make a flag ...
2)isNotEmpty 方法 源码如下: public static boolean isNotEmpty(String str) { return !StringUtils.isEmpty(str); } 1. 2. 3. 3)isBlank 方法 源码如下: public static boolean isBlank(String str) { int strLen; if (str == null || (strLen = str.length()) == 0) { ...
* boolean equalsIgnoreCase(String anotherString):与equals方法类似,忽略大小写* String concat(String str):将指定的字符串连接到此字符串的结尾,等价于用"+"* int compareTo(String anotherString):比较两个字符串的大小* String subString(int beginIndex):返回一个新的字符串,它是此字符串总beginIndex开始...
js constnullVar=null;nullVar.toString();// TypeError: nullVar is nullString(nullVar);// "null"constundefinedVar=undefined;undefinedVar.toString();// TypeError: undefinedVar is undefinedString(undefinedVar);// "undefined" Specification ECMAScript® 2026 Language Specification ...
";// In local variables (i.e. within a method body)// you can use implicit typing.vartemp ="I'm still a strongly-typed System.String!";// Use a const string to prevent 'message4' from// being used to store another string value.conststringmessage4 ="You can't get rid of me!"...
public int compareTo(String anotherString) 普通 比较字符串大小 4 public int compareToIgnoreCase(String str) 普通 不区分大小的比较字符串大小 compareTo方法最为重要,如 A.compareTo(B)返回结果有三种: >0: 字符串A>B; <0:字符串A<B; =0:字符串A=B; ...