About Creating a Simple Calculator with Macromedia Flex

[Digital Hand]

Hi,

In Creating a Simple Calculator with Macromedia Flex Article, I have seen that
the author assign the (currentRegister variable) with (reg1 variable), what did
we call this method -> currentRegister = "reg1" ?

I think that when the value of currentRegister change the reg1 value will
change too, is that right ?

[jpwrunyan]

uhm, I haven't seen that tutorial for a while, but if your point of confusion
is about reference vs assignment, just remember that primative values get
assigned using "=" but Objects (and by extension all classes, including Arrays)
get referenced using "="

[Digital Hand]

The Stange thing here, he decleared currentRegister and reg1 variables as
String Type.
He assigned reg1 = "" and currentRegister = "reg1"

And by just doing this+=1
the value of reg1 changed according to that.

So, I want to know what do you call this method.
But, really that amazing, I have not seen something like this in Java.