How can I create a multidimensional associative array in Java? Something similar to this:
Array = {
"carro 1" : Array {
"portas" : 5,
"cor" : "preto",
"km" : 10670
},
"carro 2" : Array {
"portas" : 3,
"cor" : "vermelho",
"km" : 70334
},
}
And how can I later iterate with a for and read each element? I even found this class Map but I did not understand how I can use it for the purpose I'm looking for.
If the idea is to have a list of Cars it is easier to create a Car or Vehicle object with the attributes you need, for example:
class Carro
{
private String nome;
private int portas;
private String cor;
private int km;
Carro (String nome, int portas, String cor, int km)
{
this.nome = nome;
this.portas = portas;
this.cor = cor;
this.km = km;
}
public String getNome () { return nome; }
public int getPortas () { return portas; }
public String getCor () { return cor; }
public int getKm () { return km; }
public void setNome ( int nome ) { this.nome = nome; }
public void setPortas ( int portas ) { this.portas = portas; }
public void setCor ( String cor ) { this.cor = cor; }
public void setKm ( int km ) { this.km = km; }
//Restantes métodos como clone, equals, compareTo, toString, etc..
}
You can use ArrayList<value> to put the cars in a list.
Carro carro = new Carro ("carro 1", 3, "preto", 120000);
ArrayList<Carro> listaDeCarros = new ArrayList<Carro>();
listaDeCarros.add(carro);
// Para percorrer o ArrayList:
for (Carro carro_temp : listaDeCarros)
{
Log.e("carros", "" + carro_temp.getNome());
}
Or you can use Map<key,value> which has each key associated with a value. The key (key) can be a code or a name (of the car) and the value can be the object itself.
Carro carro2 = new Carro ("carro 2", 5, "verde", 143122);
Map<String, Carro> mapDeCarros = new Map<String, Carro>();
mapDeCarros.put(carro.getNome(), carro);
// Para percorrer o Map:
for (Map.Entry<String, Carro> entry : mapDeCarros.entrySet())
{
Log.e("carros", "" + entry.getKey() + "/" + entry.getValue().toString());
// nome/carro
}