Pass Multiple object types to method with single type

Question

I have multiple classes with different names, but they all have the same variable names. I would like to pass them to a single method and access the variables directly. The example below only shows two but I have many more.

Class1{
 float x,y;
 MyArrayObj myarrayobj;//this is new'ed.
}
Class2{
 float x,y;
 MyArrayObj myarrayobj;//this is new'ed.
}

static myGenericMethod(GenericClassObj myObj){

float x = myObj.x;
float pt = myObj.myarrayobj.array[0];

}

Is this possible, or do I have to use "getters/setters' ?

Yes, it is possible as to access the fields, just don't mark them private. float pt = myObj.myarrayobj[0];. — MarGar
– MarGar, Commented Oct 15, 2014 at 0:33
why do you need two different classes that have same content? — Kick Buttowski
– Kick Buttowski, Commented Oct 15, 2014 at 0:35

deyur · Accepted Answer · 2014-10-15 00:38:16Z

4

If all of these classes share common fields, extract those fields to a superclass and make your existing classes extend that. Then your generic method takes an object of the superclass type and accesses the fields directly.

abstract MySuperClass{
    float x,y;
    MyArrayObj myarrayobj;//this is new'ed.
}
Class1 extends MySuperClass{
    // Class1 specific fields and methods
}
Class2 extends MySuperClass{
    // Class2 specific fields and methods
}

static myGenericMethod(MySuperClass myObj){
    float x = myObj.x;
    float pt = myObj.myarrayobj.array[0];
}

Make the superclass abstract (as above) if you don't want it to be instantiated.

answered Oct 15, 2014 at 0:38

deyur

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