| Writer out = new BufferedWriter(new OutputStreamWriter(System.out));
 OutputStreamWriter 是字符流通向字节流的桥梁...
 控制台输出的不是字符吗????   OutputStreamWriter 怎么是字符转为字节???
 InputStream in =System.in;
 //将字节流对象转换为字符流对象,使用转换流InputStreamReader
 InputStreamReader  isr =new InputStreamReader (in);
 键盘输入的是字符啊,,,怎么将字节流对象转换为字符流对象,使用转换流InputStreamReader????
 求解啊
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