import java.util.ArrayList;
import java.util.Random;

public class ArrayListTest {

	public static ArrayList<String> create(int n){
		ArrayList<String> ret = new ArrayList<String>();
		for (;n > 0 ; n--) {
			String random_Word = "";
			Random rand = new Random();
			int str_size = rand.nextInt(1, 50);
			for(int i =0; i < str_size; i++){
				random_Word += (char) rand.nextInt(32, 126);
			}
			ret.add(random_Word);
		}
		return ret;
	}

	public static void add(ArrayList<String> l, String s){
		l.add(s);
	}

	public static void empty(ArrayList<String> l){
		l.clear();

	}

	public static void display(ArrayList<String> l){
		System.out.print("[");
		for (String e : l) {
			System.out.print(e);
			System.out.print(", ");
		}
		System.out.println("]");
	}

	public static void main(String[] args) {
		ArrayList<String> a;

		a = create(5);
		display(a);

		add(a, "The lazy brown fox jump over the lazy fence");
		display(a);

		empty(a);
		display(a);
		
		add(a, "The lazy brown fox jump over the lazy fence");
		display(a);

	}
}