Is it possible to replace text which has blank spaces using `literate` of the `listings` package?

Question

Please consider this MWE:

\documentclass{article}

\usepackage{listings}
\usepackage{textcomp}
\usepackage{xcolor}

\lstset{
    columns=flexible,
    literate=
      {Public Class}{{Public Class\color{red}}}{12}
      {.Object}{{.\color{red}Object\color{black}}}{6}
}

\begin{document}

\begin{lstlisting}
Public Class Example

.Object = A
\end{lstlisting}

\end{document}

I would like to have Example in red, but I am not able to do it.

I thought

{Public Class}{{Public Class\color{red}}}{12}

was going to fill any sequence of characters after Public Class, like

{.Object}{{.\color{red}Object}}{6}

(Note that I removed \color{black} and = A was filled with red.)

Important Example can be changed i.e. the red color should work for any sequence of characters of the same line of Public Class. This effect is removed in the next line.

EDIT Oh, I realized that the blank space of {Public Class} is the problem. I will search if this is a duplicate, though.

EDIT 2 I could not find a duplicate. I also edited the question because I forgot to add columns=flexible, which makes the things a bit more difficult, because as @Robert pointed out doing {Public\ Class} solves the problem, but adding columns=flexible does not work anymore.

Answer 1

Instead of the literate key, you could use moredelim (building on this trick):

\documentclass{article}
\usepackage{listings}
\usepackage{textcomp}
\usepackage{xcolor}

\lstset{
    columns=flexible,
    moredelim=**[il][\PublicClass]{Public\ Class},
}
\newcommand\PublicClass{Public Class\color{red}}

\begin{document}
\begin{lstlisting}
Public Class Example
\end{lstlisting}
\end{document}