IO字节输出流

//  输出一个字节到磁盘，每次输出会覆盖之前的内容
//        OutputStream file = new FileOutputStream("src/outInputStream.txt");
        //  输出一个字节到磁盘, new FileOutputStream("src/outInputStream.txt", true); 追加不覆盖
        OutputStream file = new FileOutputStream("src/outInputStream.txt", true);
        //  写一个字节出去
        file.write('c');
        file.write(10);
        file.write("\r\n".getBytes());

        //  写一个数组出去
        byte[] buffer = {'a', 97, 98, 65};
        file.write(buffer);
        file.write("\r\n".getBytes());

        byte[] b2 = "中国人".getBytes();
        file.write(b2);
        file.write("\r\n".getBytes());

    }