title: What is the default size of the buffer used by FileWriter?
body: <p>What is the default size of buffer used by <code>FileWriter</code> ? Till I close the file as :</p>
  
  <pre><code>writer.close()
  </code></pre>
  
  <p>the buffer doesn't get flushed. So,what is the limit of my doing :</p>
  
  <pre><code>writer.write(string)
  </code></pre>