The indexOf() method returns the position of the first occurrence of specified character (s) in a string. Tip: Use the lastIndexOf method to return the position of the last occurrence of specified character (s) in a string. One of the following: Find the first occurrence of the letter "e" in a string, starting the search at position 5:

Nov 19, 2024 · In Java, the String indexOf() method returns the position of the first occurrence of the specified character or string in a specified string. In this article, we will learn various ways to use indexOf() in Java.

The String.indexOf() in Java returns the index location of a specified character or string. The indexOf() method is an overloaded method and accepts two arguments: substring or ch : the substring that needs to be located in the current string.

Aug 8, 2024 · What is the indexOf () method in Java? The indexOf () method in the Java String class is designed to provide the position of the initial occurrence of a specified character or substring within a given string.

Sep 8, 2021 · In this tutorial, we will learn about the IndexOf () java method. We will learn how we can use this method to find the position of a substring within a string. We will also cover the type of the different types of parameters that this method can take along with taking various examples.

The indexOf() method returns the index of the first occurrence of the specified character/substring within the string. public static void main(String[] args) { String str1 = "Java is fun"; int result; // getting index of character 's' result = str1.indexOf('s'); System.out.println(result); // Output: 6.

Apr 11, 2025 · The method indexOf () returns the first occurrence index of a character or a String in another String. We can pass the index of the character to start searching from. Note that the method returns -1 if the passed value is not found. Available Signatures. Example. String str = "foo"; assertEquals(1, str.indexOf("o"));

It allows you to locate the position of a character or substring within a string. This method is particularly useful for searching, parsing, and manipulating strings based on specific characters or patterns. The indexOf method has several overloads:

In Java, the `IndexOf` method is a powerful tool for searching through strings to find the index of the first occurrence of a specified substring. This tutorial provides a comprehensive guide on how to utilize this method effectively, regardless of whether …

Jul 18, 2019 · Java String indexOf () method is used to get the first index of a character or a substring in this string. There are four overloaded indexOf () methods in String class. indexOf (int ch): returns the index of the first occurrence of the given character. If the character is not found, then this method returns -1.