title: Write int to text file using Writer
body: <pre><code>Writer wr = new FileWriter("123.txt");
  wr.write(123);
  wr.close();
  </code></pre>
  
  <p>Output file contains:<br>
   <code>{</code></p>
  
  <p>Where is the problem? How to write <code>int</code> to text file using <code>Writer</code>?</p>