import java.util.ArrayList;

import java.util.Iterator;

public class ArrayListExec {

public static void main(String[] args) {

ArrayList<Car> carsList = new ArrayList<Car>();

Car c = new Car("H234");

carsList.add(c);

System.out.println(carsList.size());

//add(int index, E e)

for(int i=0; i<5; i++){

carsList.add(new Car("H"+i));

}

carsList.add(4, new Car("H345"));

//Iterator

Iterator<Car> carIterator = carsList.iterator();

while(carIterator.hasNext()){

System.out.println(carIterator.next());

}

//Clone method

ArrayList<Car> carsList2 = (ArrayList<Car>)carsList.clone();

Iterator<Car> carsIterator2 = carsList2.iterator();

while (carsIterator2.hasNext()) {

System.out.println("----"+carsIterator2.next());

}

//Contains(Object o)

System.out.println(carsList.contains(new Car("H234")));

//get(int index)

System.out.println(carsList.get(4));

// if(carsList.size() == 0) // Bad practice

//use

//if(carsList.isEmpty()){}

//Loop and size

//for(int i =0; i<carsList.size(); i++){} //Bad Practice

//for(int i =0 , n = carsList.size(); i<n ; i++){}//Good to get the size and have in a local variable

//indexOf(Object o)

System.out.println(carsList.indexOf(new Car("H4")));

ArrayList<Car> carsList3 = new ArrayList<Car>();

carsList3.ensureCapacity(300);

long startTime = System.nanoTime();

for(int i =0; i<100; i++){

carsList3.add(new Car("H"+(i+10)));

}

System.out.println("Elapsed Time - no ENSURE CAPACITY- "+( System.nanoTime()-startTime));

}

}