Hi !
Featured games (85)
games approved by the League of Dukes
Games in Showcase (636)
Games in Android Showcase (178)
games submitted by our members
Games in WIP (686)
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  
  reading/storing configuration  (Read 1493 times)
0 Members and 1 Guest are viewing this topic.
Offline stef569

Junior Devvie

« Posted 2008-09-26 13:44:05 »


I'm trying to read a config file like this:


I know howto read it out the xml file(using org.w3c.dom) ,
but I don't know how to store it(in a good way) into java

I want to get the correct type, support lists

If i would create a hashmap:

  private static HashMap<String, Object> rules;

  public static Object getRule(String rule) {
    return rules.get(rule);

Then my ide complains that it is unsafe to get it directly
    List<TerrainType> foggedTerrains = (List) Rules.getRule("TerrainsToBeFoggedWithinLos");
    List<BuildingType> foggedBuildings = (List) Rules.getRule("BuildingsToBeFoggedWithinLos");

Should I create getInt, getByte, getList ? or ...
Offline Vinicius

Junior Newbie

« Reply #1 - Posted 2008-09-26 14:33:41 »

Properties is EXACT what you are looking for.

Very useful for configuration files and things like that.
But if you need to store large amounts of data, like retrieving the money every player has in your game, the price of each item of a store... You really should use a database like MySQL or PostgreSQL.

Offline Juriy

Junior Devvie

« Reply #2 - Posted 2008-09-26 14:46:43 »

Well, properties are generally used for plain data rather then hierarchical. They are much easier to operate though.

If you want to use XML anyway you should refer to XStream ( or Digester ( (personally I prefer Digester). Try to use those libraries instead of core Java functionality to ease your life a bit. - java tutorials, tips and tricks (Russian)
Games published by our own members! Check 'em out!
Legends of Yore - The Casual Retro Roguelike
Offline CaptainJester

JGO Knight

Medals: 12
Projects: 2
Exp: 14 years

Make it work; make it better.

« Reply #3 - Posted 2008-09-26 15:27:10 »

He already knows how to read XML.  He's asking how he should store it.

The compiler is complaing about the unsafe cast.  Change it to this:
List<TerrainType> foggedTerrains = (List<TerrainType>) Rules.getRule("TerrainsToBeFoggedWithinLos");
List<BuildingType> foggedBuildings = (List<BuildingType>) Rules.getRule("BuildingsToBeFoggedWithinLos");

The issue is with generics.  Generics trys to make your code more robust by only allowing the type defined to be stored in a collection.  You can bypass that by usig Object, but it is not recommended.  It is more desirable to use a base class or interface and only put the same types in the same collection.

Offline stef569

Junior Devvie

« Reply #4 - Posted 2008-09-29 13:53:47 »

I found the successor of Properties,... Preferences!

stores/reads xml
it has getBoolean() amongst others.
Pages: [1]
  ignore  |  Print  
You cannot reply to this message, because it is very, very old.

Dwinin (63 views)
2015-11-07 13:29:08

Rems19 (77 views)
2015-10-31 01:36:56

Rems19 (69 views)
2015-10-31 01:32:37

williamwoles (104 views)
2015-10-23 10:42:59

williamwoles (91 views)
2015-10-23 10:42:45

Jervac_ (105 views)
2015-10-18 23:29:12

DarkCart (132 views)
2015-10-16 00:58:11

KaiHH (115 views)
2015-10-11 14:10:14

KaiHH (153 views)
2015-10-11 13:26:18

BurntPizza (167 views)
2015-10-08 03:11:46
Rendering resources
by Roquen
2015-11-13 14:37:59

Rendering resources
by Roquen
2015-11-13 14:36:58

Math: Resources
by Roquen
2015-10-22 07:46:10

Networking Resources
by Roquen
2015-10-16 07:12:30

Rendering resources
by Roquen
2015-10-15 07:40:48

Math: Inequality properties
by Roquen
2015-10-01 13:30:46

Math: Inequality properties
by Roquen
2015-09-30 16:06:05

HotSpot Options
by Roquen
2015-08-29 11:33:11 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‑
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!