Java-Gaming.org    
Featured games (79)
games approved by the League of Dukes
Games in Showcase (476)
Games in Android Showcase (106)
games submitted by our members
Games in WIP (533)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
 
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  [Solved] Difference between two code  (Read 1429 times)
0 Members and 1 Guest are viewing this topic.
Offline Tinhorn

Senior Member


Medals: 1
Projects: 3



« Posted 2013-08-05 04:51:44 »

What is the difference between

1  
2  
ServerSocketChannel server = ServerSocketChannel.open()
server.bind(new InetAddress(55555))


and

1  
2  
ServerSocketChannel server = ServerSocketChannel.open()
server.socket.bind(new InetAddress(55555))


The reason that i ask because i see the latter so much

Offline Danny02
« Reply #1 - Posted 2013-08-05 09:01:13 »

Both do probably the same. ServerSocketChannel is just a wrapper around ServerSocket to give you access to the NIO Channel API. I don't know why anyone would use the second code, although it is kind of documented implementation detail that ServerSocketChannel relies on ServerSocket, but I think it is no good practise to rely on implementation detail of an interface one uses.

The second snippet is also more to write^^
Offline jonjava
« Reply #2 - Posted 2013-08-05 09:21:27 »

They both essentially do the same thing. The first method requires java 1.7 since the bind() method in ServerSocketChannel uses the NetworkChannel interface that was added in 1.7 while the second method uses the sockets (ServerSocket) bind() method directly which is compatible with java 1.4

http://docs.oracle.com/javase/7/docs/api/java/nio/channels/NetworkChannel.html

http://docs.oracle.com/javase/7/docs/api/java/nio/channels/ServerSocketChannel.html#bind(java.net.SocketAddress)

http://docs.oracle.com/javase/7/docs/api/java/net/ServerSocket.html#bind(java.net.SocketAddress)


Openjdk 7 links:

http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/7-b147/java/nio/channels/NetworkChannel.java#NetworkChannel.bind%28java.net.SocketAddress%29

http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/7-b147/java/nio/channels/ServerSocketChannel.java?av=f

Comparing openjdk's (6b14) implementation the former goes through the security manager for verification whilst the latter just connects immediately.

http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b14/java/net/Socket.java

http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b14/java/net/ServerSocket.java#ServerSocket.bind%28java.net.SocketAddress%29

Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline Danny02
« Reply #3 - Posted 2013-08-05 10:07:08 »

Comparing openjdk's (6b14) implementation the former goes through the security manager for verification whilst the latter just connects immediately.

sry, but I think you got something mixed up. This is not about Socket.java but ServerSocket.

I took a look, and it seems to be something else entirely. As I though ServerSocketChannel is the "new" NIO way to do it, but it doesn't wrap the old ServerSocket. When you call the socket() method it returns a wrapper object of the Channel which behaves like an old ServerSocket.

So, use the first code snippet. The second one is only there for backwards compatibility. Like if you have to use code which needs the old ServerSocket, but you want to use the new ServerSocketChannel.
Offline jonjava
« Reply #4 - Posted 2013-08-05 11:15:24 »

Yes you're half right, the ServerSocket checks the Security Manager if it exists as well.

Pages: [1]
  ignore  |  Print  
 
 
You cannot reply to this message, because it is very, very old.

 

Add your game by posting it in the WIP section,
or publish it in Showcase.

The first screenshot will be displayed as a thumbnail.

pw (22 views)
2014-07-24 01:59:36

Riven (20 views)
2014-07-23 21:16:32

Riven (17 views)
2014-07-23 21:07:15

Riven (20 views)
2014-07-23 20:56:16

ctomni231 (48 views)
2014-07-18 06:55:21

Zero Volt (44 views)
2014-07-17 23:47:54

danieldean (35 views)
2014-07-17 23:41:23

MustardPeter (38 views)
2014-07-16 23:30:00

Cero (53 views)
2014-07-16 00:42:17

Riven (52 views)
2014-07-14 18:02:53
HotSpot Options
by dleskov
2014-07-08 03:59:08

Java and Game Development Tutorials
by SwordsMiner
2014-06-14 00:58:24

Java and Game Development Tutorials
by SwordsMiner
2014-06-14 00:47:22

How do I start Java Game Development?
by ra4king
2014-05-17 11:13:37

HotSpot Options
by Roquen
2014-05-15 09:59:54

HotSpot Options
by Roquen
2014-05-06 15:03:10

Escape Analysis
by Roquen
2014-04-29 22:16:43

Experimental Toys
by Roquen
2014-04-28 13:24:22
java-gaming.org is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑gaming.org
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!