java outputstream java.lang.OutOfMemoryError: Java heap space
<p>I am trying to publish a large video/image file from the local file system to an http path, but I run into an out of memory error after some time...</p>

<p>here is the code</p>

<pre><code>public boolean publishFile(URI publishTo, String localPath) throws Exception {
    InputStream istream = null;
    OutputStream ostream = null;
    boolean isPublishSuccess = false;

    URL url = makeURL(publishTo.getHost(), this.port, publishTo.getPath());
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();


    if (conn != null) {

        try {

            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setRequestMethod("PUT");
            istream = new FileInputStream(localPath);
            ostream = conn.getOutputStream();

            int n;
            byte[] buf = new byte[4096];
            while ((n = istream.read(buf, 0, buf.length)) &gt; 0) {
                ostream.write(buf, 0, n); //&lt;--- ERROR happens on this line.......???
            }

            int rc = conn.getResponseCode();

            if (rc == 201) {
                isPublishSuccess = true;
            }

        } catch (Exception ex) {
            log.error(ex);
        } finally {
            if (ostream != null) {
                ostream.close();
            }

            if (istream != null) {
                istream.close();
            }
        }
    }

    return isPublishSuccess;

}
</code></pre>

<p>HEre is the error i am getting...</p>

<pre><code>Exception in thread "Thread-8773" java.lang.OutOfMemoryError: Java heap space
    at java.util.Arrays.copyOf(Arrays.java:2786)
    at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:94)
    at sun.net.www.http.PosterOutputStream.write(PosterOutputStream.java:61)
    at com.test.HTTPClient.publishFile(HTTPClient.java:110)
    at com.test.HttpFileTransport.put(HttpFileTransport.java:97)
</code></pre>
