jchardet是mozilla自动字符集探测算法代码的java移植。这个算法的最初作者是frank Tang,C++源代码在http://lxr.mozilla.org/mozilla/source/intl/chardet/，可以从http: //www.mozilla.org/projects/intl/chardet.html 得到更多关于这个算法的信息。    <br /> 示例代码：    <br />    <pre class="brush:java; toolbar: true; auto-links: false;">        // Initalize the nsDetector() ;         int lang = (argv.length == 2)? Integer.parseInt(argv[1])                                          : nsPSMDetector.ALL ;         nsDetector det = new nsDetector(lang) ;          // Set an observer...         // The Notify() will be called when a matching charset is found.          det.Init(new nsICharsetDetectionObserver() {                 public void Notify(String charset) {                     HtmlCharsetDetector.found = true ;                     System.out.println("CHARSET = " + charset);                 }         });          URL url = new URL(argv[0]);         BufferedInputStream imp = new BufferedInputStream(url.openStream());          byte[] buf = new byte[1024] ;         int len;         boolean done = false ;         boolean isAscii = true ;          while( (len=imp.read(buf,0,buf.length)) != -1) {                  // Check if the stream is only ascii.                 if (isAscii)                     isAscii = det.isAscii(buf,len);                  // DoIt if non-ascii and not done yet.                 if (!isAscii && !done)                     done = det.DoIt(buf,len, false);         }         det.DataEnd();          if (isAscii) {            System.out.println("CHARSET = ASCII");            found = true ;         }</pre>    <br />    <p><strong>项目主页：</strong><a href="http://www.open-open.com/lib/view/home/1324995361999" target="_blank">http://www.open-open.com/lib/view/home/1324995361999</a></p>