This program is supposed to load the ArrayList with the names of a few dwarfs, then read them back and display only their first character. It keeps giving me this weird -Xlint error though.

import java.util.*;
public class Lab23A {
public static void main(String[] args) {
ArrayList list = new ArrayList();
list.add("Happy");
list.add("Sleepy");
list.add("Sneezy");
list.add("Doc");
for (int i = 0; i < list.size(); i++) {
System.out.println(list[i].charAt(0));
}
}
}

1. You set up your arraylist wrong. ArrayList<String> list = new ArrayList<String>();

2. list[i] doesn’t work. You need list.get(i).charAt(0)

In the end you’ll have this:

import java.util.*;
public class Lab23A {
public static void main(String[] args) {
ArrayList<String> list = new ArrayList<String>();
list.add("Happy");
list.add("Sleepy");
list.add("Sneezy");
list.add("Doc");
for (int i = 0; i < list.size(); i++) {
System.out.println(list.get(i).charAt(0));
}
}
}