import java.util.ArrayList;

public class ArrayLists {

    public static void main(String[] args) {

​

        ArrayList<String> cars = new ArrayList<String>();

​

        cars.add("Volvo");

        cars.add("BMW");

        cars.add("Ford");

        cars.add("Mazda");

​

        System.out.println(cars); // [Volvo, BMW, Ford, Mazda]

        System.out.println(cars.isEmpty()); // false

        System.out.println(cars.size()); // 4

​

        cars.remove(0); // removes the element at index 0 (i.e. "Volvo")

​

        System.out.println();

        System.out.println(cars); // [BMW, Ford, Mazda]

        System.out.println(cars.isEmpty()); // false

        System.out.println(cars.size()); // 3

​

        cars.remove(1); // removes the element at index 1 (i.e. "Ford")

​

        System.out.println();

        System.out.println(cars); // [BMW, Mazda]

​

        cars.add("Mercedes");

​

        System.out.println();

        System.out.println(cars); // [BMW, Mazda, Mercedes]

​

        cars.clear();

​

        System.out.println();

        System.out.println(cars); // []

        System.out.println(cars.isEmpty()); // true

        System.out.println(cars.size()); // 0

  } 

}

ArrayList<Integer> integerArray = new ArrayList<Integer>();

ArrayList<String> stringArray = new ArrayList<String>();

ArrayList<Double> doubleArray = new ArrayList<Double>();

//... keep replacing what is inside the <> with the appropriate

//data type

ArrayList<Integer> [] myList = (ArrayList<Integer>[]) new ArrayList[4];

//dont forget to import ArrayList--> import java.util.ArrayList;

​

ArrayList<String> yourListName = new ArrayList<String>();

        yourListName.add("Ace");

        yourListName.add("Two");

        yourListName.add("Three");

        yourListName.add("J");

        yourListName.add("Q");

        //display list

        for (String s : yourListName) {

            System.out.println(s);

        }

import java.util.ArrayList;

//create ArrayList

ArrayList<String> arrayList = new ArrayList<String>();

import java.util.ArrayList;

​

class Main {

  public static void main(String[] args){

​

    // create ArrayList

    ArrayList<String> languages = new ArrayList<>();

​

    // Add elements to ArrayList

    languages.add("Java");

    languages.add("Python");

    languages.add("Swift");

    System.out.println("ArrayList: " + languages);

  }

}

ArrayList<Type> name = new ArrayList<Type>();

ArrayList<Type> arrayList= new ArrayList<>();

List<Integer> list = new ArrayList<>();

// create Integer type arraylist

ArrayList<Integer> arrayList = new ArrayList<>();

​

// create String type arraylist

ArrayList<String> arrayList = new ArrayList<>();