import java.awt.*;

public class Filtre {
	public static String minusculesDansChaine(String chaine) {
		String chaineFinale = "";
		for (int i = 0; i != chaine.length(); i++) {
			if(Character.isLowerCase(chaine.charAt(i))) {
				chaineFinale += chaine.charAt(i);
			}
		}
		return chaineFinale;
	}
}