Java String lastIndexOf() Method with Examples

The String lastIndexOf() method returns the position of the last occurrence of a given character or substring in a String. The Index starts from 0, and if the given substring is not found it returns -1.

In this article, we will learn how to use the string lastIndexOf() method in Java to find the last occurrence of a character or substring in a String.

Program to Find the Last Index of a Character in a String in Java

This program demonstrates how to use the lastIndexOf() method to find the position of the last occurrence of a specified character in a given string.

Found Last Index of l at: 9

Different Ways to Use lastIndexOf() Method in Java

There are four variants of the lastIndexOf() method in Java.

Parameters:

• ch: Character value to be searched.
• fromIndex:  index position from where the index of the char value or substring is returned.
• str: substring to be searched.

Return Value:

• Last index of char or substring.

Now, lets see examples of all 4 variants of lastIndexOf() method of String class.

Using lastIndexOf(char ch) Method

To demonstrate how to find the last index of a character in a string.

Last index of 'G': 8

Finding the Last Index of a Character Example 

To illustrate the last index of 'g' in a specific string.

Found Last Index of g at: 19

Using lastIndexOf(char ch, int fromIndex) Method

To show how to find the last index of a character, searching backwards from a specified index.

Found Last Index of g at: 11

Using lastIndexOf(String str) Method

To demonstrate how to find the last index of a substring in a string.

Found substring geeks at: 19

Using lastIndexOf(String str, int fromIndex) Method

To show how to find the last index of a substring, searching backwards from a specified index.