What are free floater code? : <p>which code can be considered free floaters ? I am java beginner and I want to know how can I figure out free floater code.</p>

<pre><code>public class Ocz2{

//Ocz2 obj = new Ocz2();

int a[] ;

a=new int[3];

}
</code></pre>

<p>In the above code, I am not able to figure out why it is throwing error on line 3. same declaration(line 3 &amp; 4) doesn't throw any error inside method.
But from error and google search I got to know it is because free floater code.
Kindly help.</p>
