Overview of ArrayList

Declare an ArrayList Declare an ArrayList with a specified type.
```
ArrayList<String> list; // Declaration only
```

Initialize an ArrayList Use new ArrayList<String>() to create an instance.

list = new ArrayList<String>(); // Now list is an empty ArrayList

Add Elements to an ArrayList Use add() to insert elements.
```
list.add("A"); // Adds "A" to the list
```

Remove Elements from an ArrayList Use remove() by index or by value.

list.remove(0); // Removes element at index 0
list.remove("A"); // Removes the first occurrence of "A"

Clear All Elements from an ArrayList Use clear() to remove all elements.
```
list.clear(); // Empties the list
```
Copy an ArrayList Use List.copyOf() to make an immutable copy.
```
List<String> immutableList = List.copyOf(list);
```
Get the Size of an ArrayList Use size() to get the number of elements.
```
int size = list.size(); // Returns the size of the list
```
Check for Element Containment Use contains() to check if an element is in the list.
```
boolean hasA = list.contains("A"); // Returns true if "A" is in the list
```

Access an Element by Index Use get() to access elements.

String first = list.get(0); // Accesses the first element

Convert an ArrayList to an Array Use toArray() to convert the list to an array.

String[] array = list.toArray(new String[0]); // Converts list to array

Sort an ArrayList Use Collections.sort() to sort elements in ascending order.
```
Collections.sort(list); // Sorts list in ascending order
```

Iterate Over an ArrayList Use a for-each loop to iterate over elements.

for (String item : list) {
    System.out.println(item); // Prints each item in the list
}