bufferdeoutputwriter

public class BufferedReader_demo01 {

    public static void main(String[] args) {
        File file = new File("C:\\Users\\郭赛\\Desktop\\demo03.txt");
        FileInputStream fis = null;
        InputStreamReader inputStreamReader = null;
        BufferedReader bufferedReader = null;
        FileOutputStream fos = null;
        OutputStreamWriter osr = null;


        try {
            /**
             * 建立字节流和字符流的关系
             */
            fis = new FileInputStream(file);
            inputStreamReader = new InputStreamReader(fis);
            fos = new FileOutputStream(new File("C:\\Users\\郭赛\\Desktop\\demo04.txt"));
            osr = new OutputStreamWriter(fos);
            char[] bytes = new char[1024];
            int a;
            while((a = inputStreamReader.read(bytes)) != -1)
                osr.write(bytes,0,a);

            bufferedReader = new BufferedReader(inputStreamReader);
            String encoding = inputStreamReader.getEncoding();
            System.out.println(encoding);
            String s;
            while ((s =  bufferedReader.readLine()) != null)
                System.out.println(s);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if(bufferedReader == null)
                bufferedReader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if(inputStreamReader == null)
                    inputStreamReader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if(fis == null)
                    fis.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if(osr == null)
                    osr.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                if(fos == null)
                    fos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }


        }

    }
}