what does this line says...?
<p>Even though I have done bit of coding in java, I'm still finding it hard to understand this basic concept. When I was going through a book I came across this line,</p>

<blockquote>
  <p><code>main( )</code> must be declared as <code>public</code>, since it must be called
  by code outside of its class when the program is started.</p>
</blockquote>

<p>What does the author mean by saying <strong>code outside of its class</strong>? </p>
