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copied!<p><a href="http://java.sun.com/javase/6/docs/api/java/io/Writer.html" rel="nofollow noreferrer"><code>Writer</code></a> objects (including <a href="http://java.sun.com/javase/6/docs/api/java/io/PrintWriter.html" rel="nofollow noreferrer"><code>PrintWriter</code></a>) are intended specifically for output of character data. It sounds like you want an <a href="http://java.sun.com/javase/6/docs/api/java/io/OutputStream.html" rel="nofollow noreferrer"><code>OutputStream</code></a> instead of a <code>Writer</code> here.</p> <p>Where did your <code>PrintWriter</code> come from? If it was created by wrapping some kind of <code>OutputStream</code> with an <code>OutputStreamWriter</code> and then wrapping that with a <code>PrintWriter</code>, then you should just use the original <code>write(byte[] b)</code> method from the original <code>OutputStream</code>, rather than trying to use a <code>Writer</code>.</p> <p>If you want to mix character output and byte output, you may need to use <a href="http://java.sun.com/javase/6/docs/api/java/lang/String.html#getBytes%28java.lang.String%29" rel="nofollow noreferrer"><code>String.getBytes()</code></a>. Check out this example:</p> <pre><code>OutputStream o = this.conn.getOutputStream(); // Based on your comment String s = "Hello, world!"; byte[] b = ...; // These are the raw bytes that you want to write o.write(s.getBytes("UTF-8")); o.write(b); </code></pre> <p>(Of course, this will only work if the system that is reading your output understands that you are writing a mixture of characters and raw bytes and knows how to handle the mixed data that you are sending it.)</p>

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