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Java IO InputStreamReader

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//¶ÁÈ¡Îı¾
InputStream in = new FileInputStream("allfilename");
InputStreamReader isr = new InputStreamReader(in, charsetName);
BufferedReader br = new BufferedReader(isr);
//дÎı¾
OutputStream out = new FileOutputStream("allfilename");
out.write("string×Ö·û´®".getBytes("gbk"));

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