Stream1.java

import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class Stream1 {

    public static void main(String[] args) {
        List<String> strings = Arrays.asList("b", "a", "d");

        for (int i = 0; i < strings.size(); i++) {
            strings.set(i, strings.get(i).toUpperCase());
        }

        System.out.println("-----------Stream なし--------------");
        Collections.sort(strings);
        for (String string : strings) {
            System.out.println(string);
        }

        System.out.println("-----------Stream あり--------------");
        strings.stream().sorted().forEach(System.out::println);

    }
}