How to write content to a file
<pre><code>try {
    File file = new File("sample.txt");
    FileWriter fw = new FileWriter(file,true);
    fw.append('d');
    fw.write(100);
    fw.close();
} catch(IOException exp) {
    exp.printStackTrace();
}
</code></pre>

<p>I am unable to append or write anything to the file.</p>

<p>But I could read the content from the file.</p>

<p>Is anything wrong with my code?</p>
