its keeps telling me to import java util

import java.util.*;


public class Messy {
    public static void main(String[] args) {

        System.out.println( "one" );
        System.out.println( "two" );
        System.out.println( "three" );
        System.out.println( "four" );
        System.out.println( "five" );
        //Please comment out this line and
        //this line as well with a hotkey that does multi - line commenting
        List<String> numberWords = Arrays.asList( "six", "seven", "eight", "nine" );
        // Use the sout shortcut to write out numberWord;
        for (String numberWord : numberWords) System.out.println( numberWord );
    }
}