Define Attributes of a java class

[Angelica Maria]

Hello,
I have the following classes:

1) Class Card is a list of items (books, dishes ,...)
2) Class EsembleCarton is a list of boxes
3) The Article class

1) private int weight; / / Weight in kg (1 to 50 kg) Is it a way to limit in java
the weight of 1 to 50 kg

2) private String degreResistance / / degree of resistance to shock is weak or not

3) private String typeArticle / / or book, dishes, clothes, others ...) -> I set the type as string but I thought an ArrayList or a simple table.

4) private String descriptionArticle / / (string may be empty).

Now, my question is that is this the right way to define attributes of a java class.

[SoftWore]

Hello,
You can define as it is howing the preceding example

Public void setPoids(int wg){
if ( (wg> TRP) | | wg <TRP){
/ / processing -> throw exception or truncate ...
}
}

I think this is the perfect way of defining the attributes, though there may be other efficient ways, but I think this is the one.

[InterNetWorKed]

Hello,
A map that has relationship an element with a unique key, which is not your case. You should therefore use a List. To choose between a LinkedList or an ArrayList it depends greatly on the type of use setter and getter, go see the javadoc to understand the difference. Try also to use variables in lowercase and plural for collections.

private List it = <Article> new ArrayList <Article> ();

Also use a more explicit name, then I do not see just how the article name.
Here is the code for it

private List <Carton> bx = new ArrayList <Carton> ();

[GlassFish]

Hello,
It depends on usage. If the types of items are finished and should be quit and private property variables, you should use object orientation by creating a class which inherit Item class books, dishes, ... and you would have them in checkup a toString method that will write the item description. But in your case I think the string is simple enough. Hope this information will help you. If you have any more problems then do post back.

[NetworkeR]

Hello,
Follow the following
1 - create a new set of boxes;
Say in the main method that you put in a class that your name or Applications Main.

EnsembleCartons al = new EnsembleCartons();

2- INSEE an object in a set of boxes;
You therefore need a method add (Card card) in your class EnsembleCartons.

Public void add(Cardboard car){
 car.add(cardboard);
}

Cardboard is a list of type ArrayList <Carton> object.

3- list the numerous cartons of a set of boxes;
You create a eNews method in class EnsembleCartons:
Here is the code for the same

Public void printCartons(){
   for(Cardboard car: car){
      System.out.System.out.println("Cardboard" + Cardboard.id);
   }
}

[cyber-noob]

Hello,
I give an example to clarify the thing in your case
See this code

for(Cardboard car: a.car)

To the left of the symbol ":" you have the type of object that contains the collection and a variable change value at each iteration. On the right you have the collection.
The code is equivalent to:

Iterator itr = all.cartons.itr();
while(itr.hasNext()){
   Cardboard b = itr.next();
}