/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String sTofind = "ingenieur";
		String regex = "^((?![0-9]+-[0-9]+).*?)(\\b"+ sTofind + "\\b.*)";
		String string = "etudiant -: ingenieur etudes et developpement\n"
		 + "http://w...content-available-to-author-only...z.com/profilen\n"
		 + "experiences  \n"
		 + "ingenieur\n"
		 + "2018-2014      ingenieur \n"
		 + "331    ingenieur\n\n\n"
		 + "29 rue de la terrasse    Ingenieur Centrale Lyon / Supélec \n"
		 + "93160 NOISY LE GRAND    ingenieur  \n"
		 + "09 66 11 10 93       Expertise en instrumentation industrielle, \n"
		 + "06 44 25 90 09     automatisation ingenieur & marketing opérationnel \n"
		 + "email.email@wanadoo.fr   Bilingue anglais  ingenieur";
		String subst = "$1<i>$2</i>";
 
		Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE | Pattern.CASE_INSENSITIVE);
		Matcher matcher = pattern.matcher(string);
		String result = matcher.replaceAll(subst);
 
		System.out.println(result);
	}
}

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