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转换流
InputStreamReader和OutputStreamWriter用于字节数据到字符数据之间的转换。
InputStreamReader需要和InputStream套接（把InputStream转换成InputStreamReader）
OutputStreamWriter需要和OutputStream套接（把OutputStreamWriter转换成OutputStream）
转换流在构造时可以指定其编码集合，例如：
InputStream is = new InputStreamReader(System.in, "IOS8859_1")；
例子一、
public static void main(String[] args) { try { OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream("d:\\bak\\char.txt")); osw.write("miscalkjsdlasjdlajslkdalksd"); System.out.println(osw.getEncoding()); osw.close(); osw = new OutputStreamWriter(new FileOutputStream("d:\\bak\\char.txt", true), "ISO8859_1");//true，追加 osw.write("sadasdasdasdasd"); System.out.println(osw.getEncoding()); osw.close(); } catch (Exception e) { e.printStackTrace(); } }
结果：
UTF8//系统默认的编码
ISO8859_1
例子二、
public static void main(String[] args) { try { InputStreamReader isr = new InputStreamReader(System.in); BufferedReader br = new BufferedReader(isr); String s = null; s = br.readLine(); while(s != null) { if("exit".equalsIgnoreCase(s)) break; System.out.println(s.toUpperCase()); s = br.readLine(); } br.close(); } catch (Exception e) { e.printStackTrace(); } }
结果：
add111
ADD111
exit
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原文地址：http://www.cnblogs.com/lemon-now/p/5579544.html
