package vood;

import java.io.IOException;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.List;

public class Esimene {
	public static void main(String[] args) throws IOException{
		String[] eesnimed=Stream.of("Juku", "Kati", "Madis", "Mati").
		  map(s -> s.toUpperCase()).filter(s->s.length()==4).
		  toArray(String[]::new);
		System.out.println(Arrays.toString(eesnimed));
		List<String> nimeloetelu=Stream.of(eesnimed).map(s -> s+s).
				 collect(Collectors.toList());
		nimeloetelu.add("Juhan");
		//nimeloetelu.stream().forEach(System.out::println);
		nimeloetelu.stream().peek(System.out::println).
		  collect(Collectors.toList()).stream().
		  map(s->s+"!")
		 .forEach(System.out::println);
		//Ühe käsuga tehke kolm nime vooks, eraldage neist esitähed
		//ning trükkige välja	
		Files.write(Paths.get("sorditud.txt"), 
				Files.lines(Paths.get(".", "eesnimed.txt")).
				sorted((s1, s2)->s1.length()-s2.length()).
				collect(Collectors.toList()),
				Charset.defaultCharset());
	}
}