GeezerVison

package arrayList; import java.util.ArrayList; public class ArrayListBasic { public static void main(String[] args) { ArrayList arr = new ArrayList(); arr.add(1); arr.add(2); arr.add(3); arr.add(4); System.out.println(arr); arr.add(1, 5); System.out.println(arr); arr.remove(1); System.out.println(arr); System.out.println(arr.get(1)); System.out.println(arr.size()); System.out.println(arr.contains(3)); System.out.println(arr.indexOf(3)); System.out.println(arr.isEmpty()); arr.clear(); System.out.println(arr); System.out.println(arr.isEmpty()); ArrayList