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copied!<p>With basic Java SE API you can use <a href="http://java.sun.com/javase/6/docs/api/java/net/URLConnection.html" rel="noreferrer"><code>java.net.URLConnection</code></a> to fire a HTTP request. A basic example of firing a <code>GET</code> request can be found in <a href="http://java.sun.com/docs/books/tutorial/networking/urls/readingWriting.html" rel="noreferrer">Sun tutorial on the subject</a>. A <code>POST</code> request isn't much different, you instead just need to set <a href="http://java.sun.com/javase/6/docs/api/java/net/URLConnection.html#setDoOutput%28boolean%29" rel="noreferrer"><code>URLConnection#setDoOutput()</code></a> to <code>true</code> and write the query string to <a href="http://java.sun.com/javase/6/docs/api/java/net/URLConnection.html#getOutputStream%28%29" rel="noreferrer"><code>URLConnection#getOutputStream()</code></a> instead of in URL.</p> <p>Note that it's "lazily executed", the request will only be fired if you actually obtain the response stream by <a href="http://java.sun.com/javase/6/docs/api/java/net/URLConnection.html#getInputStream%28%29" rel="noreferrer"><code>URLConnection#getInputStream()</code></a>, even though you don't need it.</p> <p>If you want less verbose code and/or more control over the request, then I can recommend to use <a href="http://hc.apache.org/" rel="noreferrer">Apache Commons HttpComponents Client</a>.</p> <p>The PHP program in turn can just be written the usual way. Get request parameters by <code>$_GET</code>, <code>$_POST</code> and so on and <code>echo</code> the response. Nothing special needs to be done here. You may however consider to use an more easy parseable response format, such as XML or JSON.</p>

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