How to Write Permission to System/app in Android
<p>how to give write <code>permission</code> to <code>system/app</code> folder 
i have rooted my android device
i want to download the app and install in <code>system/app</code> folder</p>

<pre><code>Process p = Runtime.getRuntime().exec( "su" );
</code></pre>

<p>i had tried this command it ask for user <code>permission</code> and then it throws exception 
<code>system/app</code> is read only file system</p>
