Opening a .rtx file in the Java application environment?
<p>I have created a notepad application which is in a <code>jar</code> file, using Java.</p>

<p>Using this I created a text file and saved it with the file extension <code>.rtx</code>.</p>

<p>Now I want to right-click <code>file.rtx</code> in Windows, or any other platform, and in the popup I want to show my notepad application. If it is selected I want to open that file to show its contents in my notepad environment.</p>

<p>Alternatively, double-clicking the file should result in opening the file in my notepad environment.</p>
