Manipulating Characters in a String (The Java™ Tutorials > Learning the Java Language > Numbers and Strings)
Basics of Javascript · String · indexOf() (method) | by Jakub Korch | Nerd For Tech | Medium
java for complete beginners - indexof
C# String IndexOf() | Working of C# String IndexOf() with Examples
Java String indexOf() with Examples - HowToDoInJava
c# - How can I use indexof and substring to find words in a string? - Stack Overflow
Java String Introduction
visual c# .net strings - the indexof method
visual c# .net strings - the indexof method
Coding a Custom Substring IndexOf Function - Byte This!
c# - How can I use indexof and substring to find words in a string? - Stack Overflow
Java String lastIndexOf() Method Examples
Java String indexOf() Method with example
java for complete beginners - indexof
5 Examples of substring() in Java | Java67
Visual Basic String IndexOf Method - Tutlane
Java - Get the character at the given index within the String
Java String lastIndexOf() Method with example
Input a String - indexOf, substring and charAt methods of String class #9 - YouTube
C# IndexOf Examples - Dot Net Perls
Java String (indexOf(String str, int fromIndex) method) | Java Tutorial - YouTube
CA2249: Consider using 'String.Contains' instead of 'String.IndexOf' (code analysis) - .NET | Microsoft Learn
JAVA EE: Java Tutorial : Java String (indexOf(String str) method)
Java String: indexOf Method - w3resource
