Java - Find Regex to match in String
<p>I need some help because i'm junior in Java and after some research on the web
I can't find a solution.
So my problem:</p>

<pre><code>String str : size="A4"
</code></pre>

<p>I would like to extract 'A4' with a regex by giving the word "size" in the regex.
How can I do ? </p>