collection classes

[mansi gupte]

i tried compling this program but got errors while using add() , i am sure that this method is not deprecated according to java 2, can someone clarify this?

thnks ,
piya

 

import java.util.*;
 
 class arraylisttoarray 
 {
 public static void main(String args[])
 
{
ArrayList al = new ArrayList();
al.add(new Integer(3));
al.add(new Integer(8));
al.add(new Integer(9));
al.add(new Integer(1));
al.add(new Integer(0));
System.out.println("contents of a" + al);
Object r[] = al.toArray();
int sum=0;
for(int i=0 ; i< r.length;i++)
sum +=((Integer) r[i]).intValue();
System.out.println("sum" + + sum);
 
 
 }
 }

[Ankit Garg]

Hi Priya! Welcome to javaranch.

First of all the program compiles fine. It just gives a warning as you have not used generics in your code. After Java 5, non generic collections are considered type unsafe. So it will only give warning and not error.

Also your display name is not according to the javaranch naming policy. So please change it...