JAVA ARRAYLIST PROGRAM

import java.util.ArrayList;
public class listarray {
public static void main(String[] args)
{
ArrayList<String> sum= new ArrayList<String>();
System.out.println(sum.isEmpty());
String a="sdscs";
sum.add(a);
sum.add("sDCAS");
sum.add("ffsccs");
System.out.println(sum);
sum.remove(2);
System.out.println(sum);
sum.remove(a);
System.out.println(sum);
sum.add("Rahul");
System.out.println(sum);
sum.remove("sDCAS");
System.out.println(sum);
sum.add("65");
sum.add("Mano");
System.out.println(sum);
System.out.println(sum.size());
System.out.println(sum.contains("65"));
System.out.println(sum.isEmpty());
System.out.println(sum.indexOf("Mano"));
System.out.println(sum.get(2));
}
}