which solution will be faster on Android?
<p>Which solution will be faster on Android 2.1?</p>

<p>1.</p>

<pre><code>public void foo(String a, String b)
{
 String msg = a + ": " + b;
 print(msg);
}
</code></pre>

<p>2.</p>

<pre><code>public void foo(String a, String b)
{
 StringBuilder sb = new StringBuilder(a.length() + b.length() + 2);
 sb.append(a);
 sb.append(": ");
 sb.append(b);
 print(sb.toString());
}
</code></pre>

<p>Is android use internally StringBuilder for first solution?</p>
