ArrayList

 import java.util.Scanner;

import java.util.ArrayList;

public class Arr

{

public static void main(String Args[])

{

int index,choice,again; 

String value;

Scanner s1 = new Scanner(System.in);

ArrayList<String> a1 = new ArrayList<String>();

a1.add("Delhi");

a1.add("Mumbai");

a1.add("Bangalore");

a1.add("Chennai");

a1.add("Nagpur");

System.out.println("Enter the choice");

System.out.println("1. Display the element");

System.out.println("2. Set the element");

System.out.println("3. delete the element");

do

{

System.out.println("Enter 1,2 or 3");

choice = s1.nextInt();

switch(choice)

  {

case 1:  System.out.println("Enter the position"); 

              index= s1.nextInt();

              System.out.println("the element is" + a1.get(index));

              break;

case 2:  System.out.println("Enter the position"); 

              index= s1.nextInt();

              System.out.println("Enter the element");

              value= s1.nextLine(); 

              a1.set(index,value);

              System.out.println("Your new ArrayList is" + a1); 

              break;

case 3:  System.out.println("Enter the position"); 

              index= s1.nextInt(); 

              a1.remove(index);

              System.out.println("the new arraylist is" + a1);

              break; 

 

default: System.out.println("Invalid choice"); 

  } 

System.out.println("Do you want to continue.. Enter '1' otherwise 0"); 

again= s1.nextInt();

}while(again==1);  

}

}