@Test

    public void test01() throws Exception{

        InputStream in=new FileInputStream("c://test.txt");

        byte[] b=new byte[1024];

        ByteArrayOutputStream  out=new ByteArrayOutputStream();

        int len=-1;

        while((len=in.read(b))!=-1){

            out.write(b,0,len);

        }

        out.close();

        in.close();

        String str= new String(out.toByteArray(),"UTF-8");

        System.out.println(str);

    }