String 方法 閱讀英文 儲存 共用方式為 Facebookx.comLinkedIn電子郵件 String.IndexOf Method Reference Feedback Definition Namespace: Java.Lang Assembly: Mono.Android.dll Overloads 展開資料表 IndexOf(Int32) Returns the index within
StringmyStr="Hello planet earth, you are a great planet.";System.out.println(myStr.indexOf("planet")); Try it Yourself » Definition and Usage TheindexOf()method returns the position of the first occurrence of specified character(s) in a string. ...
The Java string indexOf method is a function that is used to get the integer value of a particular index of String type object, based on a criteria specified in the parameters of the IndexOf method. A typical scenario can be when a system administrator wants to find the index of the ‘...
java字符串indexof用法 **Java String indexOf用法** **一、基本用法** In Java, the `indexOf` method in the `String` class is super useful. It helps you find the position of a particular character or a substring within a string. For example, if you have a string like "Hello, world!"...
Stringstr="Hello World";intindex=str.indexOf('W');System.out.println("The index of 'W' in the string is: "+index); 1. 2. 3. 输出结果为: The index of 'W' in the string is: 6 1. 示例2:从指定索引位置开始查找字符在字符串中的索引位置 ...
import java.util.*; public class StringMethodExample { public static void main(String args[]) { String str = "w3resource"; // index numbering starts form zero // 1st overloaded method int x = str.lastIndexOf('s'); System.out.println(); ...
System.out.println(result);// -1// index of empty string in the string result = str1.indexOf(""); System.out.println(result);// 0} } Run Code Notes: The character'a'occurs multiple times in the"Learn Java"string. TheindexOf()method returns the index of the first occurrence of'a...
1.String.indexOf()API TheString.indexOf()in Java returns the index location of a specified character or string. TheindexOf()method is an overloaded method and accepts two arguments: substringorch: the substring that needs to be located in the current string. ...
String.LastIndexOf MethodReference Feedback DefinitionNamespace: Java.Lang Assembly: Mono.Android.dll OverloadsРазширяваненатаблица LastIndexOf(Int32) Returns the index within this string of the last occurrence of the specified character. LastIndexOf(String) Returns ...
TheindexOf()method returns the position of the first occurrence of a value in a string. TheindexOf()method returns -1 if the value is not found. TheindexOf()method is case sensitive. See Also: The lastIndexOf() Method The search() Method ...