store integer and string in map
<p>I have the following code:</p>

<pre><code>    public Map&lt;String,?&gt; createItem(String title, String caption) {

              Map&lt;String,String&gt; item = new HashMap&lt;String,String&gt;();
                           item.put(ITEM_TITLE, title);
                          item.put(ITEM_CAPTION, caption);
            (***)      item.put(ITEM_NUM, NUM);
</code></pre>

<p>in line (<em>*</em>) i have error what i need to do to add the integer </p>
