读取文件内容,并输出到控制台,新版、旧版

新版

    String f="d:/Auser/d.txt";
        FileInputStream fis = null;
                //读取文件内容,并输出到控制台,新版
        try {
            fis = new FileInputStream("d:/Auser/d.txt");
            System.out.println(new String(fis.readAllBytes()));
            fis.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

旧版

        String f="d:/Auser/d.txt";
        FileInputStream fis = null;
        try {
            fis = new FileInputStream(f);
            byte[] buf =new byte[1024];
            int len =0;
            while ((len=fis.read(buf))>0){
                System.out.println(new String(buf,"utf-8"));
            }
            fis.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }