Java Networking and Java NIO Tutorial and Notes

Java Networking
http://tutorials.jenkov.com/java-networking/index.html

Java standard IO works with byte streams and character streams, blocking.

How to create a TCP socket to connect to a server?
Use Socket, getOutputStream, write, flush then close.
Use Socket, getInputStream, read, in.close, socket.close.

How to create a server that listens to incoming TCP connections?
Use ServerSocket, accept, socket.close, serverSocket.close.

How to send data using UDP socket?
Prepare new byte[65508], InetAddress.getByName and DatagramPacket
Use DatagramSocket().send(DatagramPacket)

How to receive data using UDP socket?
Use DatagramSocket to specify the UDP port, byte[], DatagramPacket.receive which is a blocking method.

How to read the HTTP web content?
Use URL and URLConnection.getInputStream

How to create an IP address?
Use InetAddress.getByName("google.com"), getByName("1.2.3.4") or getLocalHost()

Java NIO
http://tutorials.jenkov.com/java-nio/index.html

Java NIO works with channels and buffers, non-blocking, selectors.
A single thread uses a single selector that monitors multiple channels for events like connection opened or data arrived.

Java NIO core classes: Channel, Buffer, Selector

For Channel, the implementations are FileChannel, DatagramChannel, SocketChannel, ServerSocketChannel. 

For Buffer, the implementations are ByteBuffer, CharBuffer, DoubleBuffer, FloatBuffer, IntBuffer, LongBuffer, ShortBuffer. They are essentially the 8 Java primitives except Boolean.

CPU Marks Windows Experience Index and Sis

Intel i3 2100 3.1Ghz 2 core 4 thread using, with graphic

8GB but 32 bit 2.88GB usable

Intel Graphics Family

X200 P8600 2.4Ghz 4GB

MBP 2010

Macbook pro 13 2010 Mid 2.4Ghz P8600 4GB DDR3 1066Mhz 320M 256MB

Intel HD Graphics 3000

Win 7	i3 2100	MBA2011	x200	A8-5500	G620
CPU	7.1	6.8	6	7.2	6.4
RAM	5.5	5.9	5.9	5.9	5.5
Aero	4.6	5.6	4.1	6.7	4.3
Graphics	5.6	6.2	3.4	6.7	5.7
Disk	7.1	7.2	5.9	5.9	5.9

Sis	i3	MBA2011
Media MPixel/s	72	60
AES GB/s	0.24	1.483
finance kOPT/s	6.21	4.09
Science GFLOPS	6.32	4.59
.NET GOPS	7.82	7.19
Memory GB/s	17.9	12.2
Memory late ns	25.5	31.2
Disk MB/s	173	219
Disk IOPS	4786	1431

	i3	i5 2557m	P8600
GeekBench 3	4786	4023	2303
Dual-Core A4-6300	2258	2088	1388
AMD	A4-6300 Dual	x4 860K	A10-7850K	A8 7650K	A8 6600k
Price	$266	$526	$789	$674
GeekBench 3	2972	7520	7022		6071
GeekBench 3 Single Core	1913	2478	2328		2132