how to add variable to array list and then total all the elements of arraylist?
<p>I'm trying to input a variable into an ArrayList and then add all the elements. How can i do that? The code I tried is below.  Thanks.</p>

<pre><code>ArrayList&lt;String&gt; aListNumbers = new ArrayList&lt;String&gt;();
int abc = 23;
aListNumbers.add("abc");
aListNumbers.add("2");
aListNumbers.add("3");

//Java ArrayList Sum All Elements

int sum = 0;
for(int i=0; i &lt; aListNumbers.size(); i++){
    sum = sum + Integer.parseInt(aListNumbers.get(i));
}

System.out.println("Sum of all elements of ArrayList is " + sum);
</code></pre>
