ArrayList

ArrayList

ArrayList is a resizable array from java.util. Unlike a plain array, it grows automatically:

import java.util.ArrayList;

ArrayList<String> list = new ArrayList<>();
list.add("apple");
list.add("banana");
list.add("cherry");

System.out.println(list.size());       // 3
System.out.println(list.get(1));       // banana
System.out.println(list.contains("apple"));  // true
list.remove("banana");
System.out.println(list.size());       // 2
System.out.println(list);             // [apple, cherry]

Sorting

import java.util.Collections;

ArrayList<Integer> nums = new ArrayList<>();
nums.add(3); nums.add(1); nums.add(2);
Collections.sort(nums);
System.out.println(nums);  // [1, 2, 3]

Iterating

for (String item : list) {
    System.out.println(item);
}

Your Task

Create an ArrayList<String> with "banana", "apple", "cherry", "date". Then:

1. Print its size
2. Print the first element (get(0))
3. Print whether it contains "apple"
4. Sort it with Collections.sort, then print the whole list
5. Remove "cherry", print the new size, print the first element