import java.text.MessageFormat;
import java.util.*;
import java.util.stream.*;
 
public class Main {
 
    private static final String ORIGINAL = "Sou Fulano.";
    private static final String ALTERAR_PARA = "Meu nome é {0}";
 
    private static List<String> get(String message, int...indexes){
 
        List<Integer> indexez = IntStream.of(indexes).boxed().collect(Collectors.toList());
        String[] words = message.split("\\s+");
 
        List<String> ret = new ArrayList<>();
        for(int i = 0; i < words.length; i++)
            if(indexez.contains(i))
                ret.add(words[i]);
        return ret;
    }
 
    public static void main(String[] args) {
        String nome = get(ORIGINAL, 1).get(0);
        String mensagemFormatada = MessageFormat.format(ALTERAR_PARA, nome);
        System.out.println(mensagemFormatada); 
    }
}

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