CODEWITHSUNDEEP
javadata-structures
Pavan Dittakavi
Pavan Dittakavi

Reputation: 3181

Which data structure to use

I need to store information about two attributes of an instance and there could be more than one of them.

So, essentially, I need to store information about two attributes for a set of objects. Which data structure should I be using? I'm using Java. Also, of the two attributes, one is a string and the other is an object.

Upvotes: 0

Views: 228

Answers (4)

Noufal Panolan
Noufal Panolan

Reputation: 1367

You can create a model class with two attributes mentioned in your question such as String and Object as follwos

public class Model {

    String str;
    Object object;

    public String getStr() {
        return str;
    }

    public void setStr(String str) {
        this.str = str;
    }

    public Object getObject() {
        return object;
    }

    public void setObject(Object object) {
        this.object = object;
    }

}

then u can use any collection framework to store the corresponding model class object such as

List<Model> list=new ArrayList<Model>();
list.add(new Model());

and so on

Map, Set ..

Upvotes: 0

Tudor
Tudor

Reputation: 62439

Do you need to search by one of them? Then use a HashMap with that member as the key. For example if you need to search by the String: 

Map<String, Object> map = new HashMap<String, Object>();

Upvotes: 1

Jigar Joshi
Jigar Joshi

Reputation: 240860

You can define an Helper class like

class DataRepresenterHelper {
   private String name;
   private Object foo;
   //setters + getters + constructer
}

and then based on the need you could store them in Map, List or Set or something..

Upvotes: 3

Ashwinee K Jha
Ashwinee K Jha

Reputation: 9307

You can create a simple Pair class that holds the two attributes and add then to a map for each object that you want to store.

If you don't want the Pair then you can have two maps each holding one attribute.

Upvotes: 1

Related Questions