Text Formatting ⇒ listings gives the same result for every language

[Omcsesz]

Hello, All!

I get the same results whatever language I choose when using the listings package.
MWE:

Code: Select all

\documentclass[a4paper,11pt]{article} 

\usepackage[utf8]{inputenc} % utf8
\usepackage[T1]{fontenc} 
\usepackage{listings}
	
\begin{document}
	\lstset{language=Java}
	\begin{lstlisting}
		public byte getSelectedPortAsByte(){
			int temp;
			
			switch(selectedPort){
				case "PORTB":
					temp= 0x01;
					break;
				case "PORTC":
					temp= 0x02;
					break;
				default:
					temp= 0x00;
				break;
			}
			return (byte)temp;
		}
	\end{lstlisting}	
\end{document}

Do you have any idea regarding this?

[Stefan Kottwitz]

Hi Omcsesz,

welcome to the forum!

Can you please try this in the online compiler? Just click on "Open in Overleaf" above your code. Then look at the results with Java, C, TeX. They look different to me. Do you get the same on your PC?

Stefan

[Omcsesz]

HI, Stefan!

They are the same in Overleaf as well, mainly. A few words are in bold in Java, which are not in C. But the words are the same color.

[Stefan Kottwitz]

Well, so there is no problem with having the same result for every language.

It seems you would like to have colors. You could load the xcolor package, define colors, and use them, such as by:

Code: Select all

\lstset{language = Java,
  keywordstyle = \color{myblue},
  stringstyle = \color{myred},
  commentstyle = \color{mygreen},
  ...
}

Stefan

[Omcsesz]

I see. So no matter what language I choose, it will be black and white by default.

[Stefan Kottwitz]

Language definitions are more about keywords, comments, strings, numbers, delimiters, such as here (internally from listings):

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\lst@definelanguage{Java}%
  {morekeywords={abstract,boolean,break,byte,case,catch,char,class,%
      const,continue,default,do,double,else,extends,false,final,%
      finally,float,for,goto,if,implements,import,instanceof,int,%
      interface,label,long,native,new,null,package,private,protected,%
      public,return,short,static,super,switch,synchronized,this,throw,%
      throws,transient,true,try,void,volatile,while},%
   sensitive,%
   morecomment=[l]//,%
   morecomment=[s]{/*}{*/},%
   morestring=[b]",%
   morestring=[b]',%
  }[keywords,comments,strings]%

There's no color coming with a language definition. It's the author/users decision to choose colors. You know, non-color printers could have issues with default colors. Just let your PDF reader search for color in the listings manual to see more specifically about color customization.

Stefan

[Johannes_B]

If your work is published in a journal and lands at a library and a student makes a hard copy or your article, the poor student won't figure out what different colors on the copy. Same for diagrams and plots. That is way most printed publishing is done black and white.

If you are making a presentation, this is not an issue (unless the professor wants a hard copy of the slides).

[Omcsesz]

I see. You are right.