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« Patrons de conception/Prototype » : différence entre les versions

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== Exemple de code en JAVA ==
 
/* Prototype Class */
 
public class Cookie implements Cloneable {
{▼
public Object clone()
{
try{
} {▼
//In an actual implementation of this pattern you would now attach references to
//the expensiveIn toan produceactual partsimplementation fromof thethis copiespattern thatyou arewould heldnow insideattach thereferences prototype.to
// the expensive to produce parts from the copies that are held inside the prototype.
return this.getClass().newInstance();▼
▲ }
▲ return this.getClass().newInstance();
catch(InstantiationException e)▼
{ }
▲ catch(InstantiationException e)
e.printStackTrace();
return null;{
} e.printStackTrace();
Cookie tempCookie = return null; ▼
}▼
} }▼
}▼
▲ }
 
▲ }
/* Concrete Prototypes to clone */▼
 
▲ /* Concrete Prototypes to clone */
public class CoconutCookie extends Cookie { }▼
 
▲ public class CoconutCookie extends Cookie { }
/* Client Class*/▼
 
▲ /* Client Class */
public class CookieMachine▼
▲{
▲ public class CookieMachine
 
{
private Cookie cookie; // could have been a private Cloneable cookie;
 
public CookieMachine(Cookie cookie) { ▼
public CookieMachine(Cookie this.cookie = cookie; )
} {
this.cookie = cookie;
public Cookie makeCookie() { ▼
}
return (Cookie)cookie.clone();
▲ }
public ObjectCookie clonemakeCookie() { }
{
 
▲ public CookieMachine return (Cookie) cookie.clone() {;
public static void main(String args[]){ ▼
}
▲ Cookie tempCookie = null;
Cookie prot = new CoconutCookie(); ▼
▲ public CookieObject makeCookieclone() { }
CookieMachine cm = new CookieMachine(prot); ▼
for(int i=0; i<100; i++) ▼
▲ public static void main(String args[]){
tempCookie = cm.makeCookie(); ▼
} {
Cookie tempCookie = null;
}▼
▲ Cookie prot = new CoconutCookie();
▲ CookieMachine cm = new CookieMachine(prot);
▲ for (int i=0; i<100; i++)
▲ tempCookie = cm.makeCookie();
}
▲ }
 
== Exemples ==
Récupérée de « https://fr.wikibooks.org/wiki/Patrons_de_conception/Prototype »