Question

How to replace the last occurrence of a character in a string with Java

Answer 1

public class ReplaceTheLastOccurrence_Java {
    public static String replaceTheLastOccurrenceOfACharacterInAString(String str, char charToReplace, char replacementChar) {
        int pos = str.lastIndexOf(charToReplace);

        if (pos != -1) {
            str = str.substring(0, pos) + replacementChar + str.substring(pos + 1);
        }
        
        return str;
    }

    public static void main(String[] args) {
        String str = "c++ c python c++ java c++ php";
        char charToReplace = 'c';
        char replacementChar = 'W';

        str = replaceTheLastOccurrenceOfACharacterInAString(str, charToReplace, replacementChar);
        
        System.out.println(str);
    }
}



/*
run:

c++ c python c++ java W++ php

*/

 

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