Hand primary design mode-iterator mode

Iterator pattern: Provides a way to access each element of an aggregation object sequentially without exposing its internal representation.

A food

Java code

public class Afood {
private string name;
private Double
-Afood (String name, Double price) {
this.name= name;
this.price = Price;
} public
String getName () {
Retu　RN name;　
}
public void SetName (String name) {
this.name = name.
} public
double GetPrice () {
return　Price　
}
The public void Setprice (double price) {
This.price = Price]
@Override public
String tostr ing () {
//TODO auto-generated method stub return
' name: ' + name + ', price ' + price;
}
}