使用示例 下面是一个使用示例,演示了如何调用findAllOccurrences方法来获取字符串在另一个字符串中出现的所有位置: StringmainString="Hello, Hello, World, Hello";StringsubString="Hello";List<Integer>occurrences=findAllOccurrences(mainString,subString);System.out.println("Occurrences of 'Hello': "+occurrences...
The indexOf() method in java is a specialized function to find the index of the first occurrence of a substring in a string. This method has 4 overloads.
The idea is to use theindexOf()method of theStringclass, which returns the index within this string of the first occurrence of the specified substring, starting at the specified index. It returns-1if there is no such occurrence. The trick is to start from the position where the last foun...
publicclassStringUtils{publicstaticintcountOccurrences(Stringstr,Stringsub){if(str==null||sub==null||sub.isEmpty()||str.isEmpty()){return0;}intcount=0;intindex=0;// 使用 indexOf 方法查找 sub 在 str 中的每次出现while((index=str.indexOf(sub,index))!=-1){count++;index+=sub.length();...
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3-String 3.1-字符串是一个非常特殊的类 3.2-String 字面值 vs. String对象 3.3-String的方法 3.3.1-length() 3.3.2-concat(String) 3.3.3-indexOf(..) 3.3.4-substring(..) 3.3.5-replace 3.3.6-其它实例 4-StringBuffer vs StringBuilder
public class Program { public static void main(String[] args) { String line = "one two three"; // Get index of substring two. int index = line.indexOf("two"); System.out.println(index); } } 4 While-loop. We often use indexOf within a loop. Consider this program. It continues ...
text/java 复制 public static void printAt(BreakIterator boundary, int pos, String source) { int end = boundary.following(pos); int start = boundary.previous(); System.out.println(source.substring(start,end)); } </blockquote> Find the next word: <blockquote>text/java 复制 ...
String Replace() Method As the name itself suggests, the replace() method is used to replace all the occurrences of a specific character of a String with a new character. The Java String Replace has two variants as shown below. #1) The replace method for the character. ...
Equal ➩ Java - Find Index of First Occurrence of Substring ✦ Java - Find Index of Nth Occurrence of Substring ✦ Java - Replace First Occurrence of Substring ✦ Java - Replace All Occurrences of Substring ✦ Java - Reverse a String ✦ Java - Split String ✦ Java -...