Like fighting with the tiped one of JAVA

[Albert]

The problem is to implement a Observer pattern with two types of “dependents” that do not have anything to do to each other, the only thing that they share is a update() method . I am going to show it graphically, maybe you understand what am I talking about:

Code:

|--------------|               |--------------------|      |--------------| 
|   Observer1  |               |        Model       |      |  Observer2   | 
|--------------|               |--------------------|      |--------------|  
|              |<---------     |dependents:ArrayList|  --->|              | 
|--------------|               |--------------------|      |--------------| 
|update():void |               |   changed():void   |      |update():void | 
|--------------|               |--------------------|      |--------------|

Code:

public void changed(){ 
    Iterator it=dependents.iterator(); 
    while(ir.hasNext()){ 
         ______  object = (______) it.next(); 
         object.update(); 
    } 
}

any ideas? I want the solution without making 2 differents arrays.

Albert

[Marcus]

The solution that you are looking for is deciphers here:

design-nation.blog/en: An example of the Observer pattern (the java version)

Marcus