Java-Gaming.org
Play Revenge of the Titans! The situation is critical. We need fancy commanders to defend Earth, the moon, Mars!
Featured games (78)
games approved by the League of Dukes
Games in Showcase (404)
games submitted by our members
Games in WIP (289)
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  
  [Networking] Reading a String[] [SOLVED]  (Read 386 times)
0 Members and 1 Guest are viewing this topic.
Offline GabrielBailey74

JGO Knight


Medals: 8
Projects: 6


<3 Java


« Posted 2012-12-04 00:50:46 »

Well, my problem today is that when I attempt to send a String[] to the client, it won't print out each index of the String[] :/

Here is what I came up with for reading a ArrayList:
1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
   public Object readObject() throws IOException, ClassNotFoundException {
      Object inc = getInputStream().readObject();
      if (inc instanceof ArrayList) {
         ArrayList<?> list = (ArrayList<?>) inc;
         int size = list.size();
         System.out.println("ArrayList<?> Size: "+size);
         return list;
      }
      return null;
   }

Returns:
Quote
ArrayList Size: 5
[Stream]: Incoming: [X: 7, X: 71, X: 968, X: 323, X: 584]
Now that works perfect, the client receives the ArrayList, and prints out each index correctly.

Now onto reading a String[], this is what I have so far Emo:
1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
12  
13  
14  
15  
16  
17  
   public Object readObject() throws IOException, ClassNotFoundException {
      Object inc = getInputStream().readObject();
      if (inc instanceof String[]) {
         /* Create a Instance of the incoming String[] */
         String[] tmp = (String[]) inc;
         /* Calculate the length of the incoming String[] */
         int size = tmp.length;
         System.out.println("String[] Size: "+size);
         String[] tmp2 = new String[size];
         /* Attempt to assign each index of the incoming String[] to a new String[] for printing */
         for (int i = 0; i < size; i++) {
            tmp2[i] = tmp[i];
            return tmp2;
         }
      }
      return null;
   }

Returns:
Quote
String[] Size: 10
[Stream]: Incoming: [Ljava.lang.String;@24a20892

Please don't post a reply relating to Serialization, for I am attempting to do this my way Grin.
Any help on this matter would be greatly appreciated.
If you notice a error in the code for reading the String[] please tell me.

Other Info:
When I highlight the block of code for reading the String[] in my IDE (Eclipse), it says "Dead Code" T_T.

Offline Agro
« Reply #1 - Posted 2012-12-04 00:56:22 »

You should use a ByteBuffer o.o

Offline GabrielBailey74

JGO Knight


Medals: 8
Projects: 6


<3 Java


« Reply #2 - Posted 2012-12-04 00:59:06 »

Thanks Agro, looking into it as we speak, if anyone else has a idea please do post it. Cheesy
I'll post back with my progress.

Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline Agro
« Reply #3 - Posted 2012-12-04 01:03:20 »

If you use a ByteBuffer, you can basically "write" any data type it allows you to. For example, in C++, you could just write the pointer of an object to a byte array and then just send it out. On the server or client side, you can just typecast that data to the pointer.

You could do what you're doing right now, but I think it would be smarter to create a Packet class to hold all the data. It would be more organized then.

Offline GabrielBailey74

JGO Knight


Medals: 8
Projects: 6


<3 Java


« Reply #4 - Posted 2012-12-04 01:49:44 »

Great, I got it working Smiley

Now Returns:
Quote
[Stream]: Object[] Size: 10
[Stream]: Incoming: lol: 0
[Stream]: Incoming: lol: 1
[Stream]: Incoming: lol: 2
[Stream]: Incoming: lol: 3
[Stream]: Incoming: lol: 4
[Stream]: Incoming: lol: 5
[Stream]: Incoming: lol: 6
[Stream]: Incoming: lol: 7
[Stream]: Incoming: lol: 8
[Stream]: Incoming: lol: 9

Sent From Server:
1  
2  
3  
4  
5  
   Object[] lmfao = new Object[10];
   for(int i = 0; i < lmfao.length; i++) {
      lmfao[i] = "lol: "+i;
   }
   stream.writeObject(lmfao);


Method Now:
1  
2  
3  
4  
5  
6  
7  
8  
9  
10  
11  
   public Object readObject() throws IOException, ClassNotFoundException {
      Object inc = getInputStream().readObject();
      if (inc instanceof Object[]) {
         Object[] arr = (Object[]) inc;
           for (Object obj : arr) {  
              logStream("Incoming: "+obj, false);
           }  
           return arr;
      }
      return null;
   }

Pages: [1]
  ignore  |  Print  
 
 

Play Revenge of the Titans! The situation is critical. We need fancy commanders to defend Earth, the moon, Mars!
 
Browse for soundtracks for your game!

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

The first screenshot will be displayed as a thumbnail.

The invasion has landed! On Mars! And you're there to beat 'em!
cubemaster21 (37 views)
2013-05-17 21:29:12

alaslipknot (46 views)
2013-05-16 21:24:48

gouessej (75 views)
2013-05-16 00:53:38

gouessej (75 views)
2013-05-16 00:17:58

theagentd (83 views)
2013-05-15 15:01:13

theagentd (77 views)
2013-05-15 15:00:54

StreetDoggy (119 views)
2013-05-14 15:56:26

kutucuk (143 views)
2013-05-12 17:10:36

kutucuk (143 views)
2013-05-12 15:36:09

UnluckyDevil (153 views)
2013-05-12 05:09:57
Complex number cookbook
by Roquen
2013-04-24 12:47:31

2D Dynamic Lighting
by Oskuro
2013-04-17 16:46:12

2D Dynamic Lighting
by Oskuro
2013-04-17 16:45:57

2D Dynamic Lighting
by Oskuro
2013-04-17 16:23:20

Noise (bandpassed white)
by Roquen
2013-04-05 17:36:01

Noise (bandpassed white)
by Roquen
2013-04-03 16:17:38

Java Data structures
by Roquen
2013-03-29 13:21:12

Topic Request
by kutucuk
2013-03-22 21:42:01
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!
Page created in 0.157 seconds with 20 queries.