java replaceLast() [duplicate]

Answer 1

I also have encountered such a problem, but I use this method:

public static String replaceLast2(String text,String regex,String replacement){
    int i = text.length();
    int j = regex.length();

    if(ij&&!(text.substring(i-j, i).equals(regex))) {
        i--;
    }

    if(i<=j&&!(text.substring(i-j, i).equals(regex))){
        return text;
    }

    StringBuilder sb = new StringBuilder();
    sb.append(text.substring(0, i-j));
    sb.append(replacement);
    sb.append(text.substring(i));

    return sb.toString();
}