Java 컬렉션 & 예외처리

import java.util.ArrayList;
import java.util.HashMap;

public class Collections {
    public static void main(String[] args) {
        ArrayList<String> list = new ArrayList<>();
        list.add("HTML");
        list.add("Java");
        list.add("Spring");
        System.out.println(list.get(1));  // Java
        System.out.println(list.size());  // 3

        HashMap<String, Integer> map = new HashMap<>();
        map.put("alice", 90);
        map.put("bob", 85);
        System.out.println(map.get("alice"));  // 90

        try {
            int result = 10 / 0;
        } catch (ArithmeticException e) {
            System.out.println("에러: " + e.getMessage());
        } finally {
            System.out.println("항상 실행됨");
        }
    }
}