####DataInputStream与DataOutputStream

public static void main(String[] args) throws IOException

{

    writeFile();

    readFile();

}

private static void writeFile() throws IOException

{

    FileOutputStream fos = new FileOutputStream("myfile\\data.txt");

    DataOutputStream dos = new DataOutputStream(fos);

    dos.writeBoolean(true);

    dos.close();

}

private static void readFile() throws IOException

{

    FileInputStream fis = new FileInputStream("myfile\\data.txt");

    DataInputStream dis = new DataInputStream(fis);

    boolean b;

    b = dis.readBoolean();

    System.out.println(b);

    dis.close();

}

#####ByteArrayInputStream与ByteArrayOutputStream

public static void main(String[] args)

{

    ByteArrayInputStream bis = new ByteArrayInputStream("abcdef".getBytes());

    ByteArrayOutputStream bos = new ByteArrayOutputStream();

    int b;

    while((b = bis.read())!=-1){

        bos.write(b);

    }

    System.out.println(bos.toString());

}