# How to access all variables of a single class?
**URL:** https://discourse.processing.org/t/how-to-access-all-variables-of-a-single-class/5409
**Category:** Coding Questions
**Created:** [November 10, 2018, 6:50pm UTC](https://discourse.processing.org/t/how-to-access-all-variables-of-a-single-class/5409 "2018-11-10T18:50:43Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Architector\_4](https://discourse.processing.org/u/Architector_4)
#### Post date: [November 10, 2018, 6:50pm UTC](https://discourse.processing.org/t/how-to-access-all-variables-of-a-single-class/5409/1 "2018-11-10T18:50:43Z")
Say, for example, I have this class:
```auto
class thing{
float x;
float y;
String z;
String w;
boolean omega;
int foo;
thing(){} //A meh constructor, I know. ._.
}
```
And I want to repeat a specific set of code on all float variables in the class, and then another with all string variables.
One thing I can do for this is simply manually repeat that piece of code for every float and every string, considering that I know all of them: `doThing(thatThing.x); doThing(thatThing.y); doStringThing(thatThing.z); ...`
But, this means that if I’ll add or remove variables from this class, I’ll also have to edit this line of `doThing()` calls to fit the new contents. And I don’t like repeating stuff in this fashion, so I’m wondering - is there a way to do this any better?
One way that I did consider is making a 1 row long `Table` instead of a new class, store everything inside of that, and then use `getColumnTitles()` to get a list of all “variables” in there - however that is significantly slower than having these variables the normal way. Or a `JSONObject` using the same methods - except it doesn’t have `getColumnTitles()` and has an iterator instead - but with this usage it’s almost the same thing and still shows poor performance.
Any ideas?
---
### Author:  [@kfrajer](https://discourse.processing.org/u/kfrajer)
#### Post date: [November 11, 2018, 2:05am UTC](https://discourse.processing.org/t/how-to-access-all-variables-of-a-single-class/5409/2 "2018-11-11T02:05:19Z")
I think you need to provide some code. I do not get your question with the information you provided.
Kf
---
### Author:  [@Lexyth](https://discourse.processing.org/u/Lexyth)
#### Post date: [November 11, 2018, 9:45am UTC](https://discourse.processing.org/t/how-to-access-all-variables-of-a-single-class/5409/3 "2018-11-11T09:45:14Z")
You have a class ‚Thing‘ with 10 int variables and 5 Strings and some others. Now he wants to know if there is a way to access all ints because he doesn‘t want to changed them manually When he changes them inside the class. Like
```auto
((Thing)thing).getAllInts(); //returns all int variables in the class.
```
Oh and he probably doesn‘t want to have it as a new method like
```auto
int[] getAllInts() {
int[] ret = new Int[10];
ret = append..... and then just append each int
return ret;
}
```
because Then he has to edit this method, which is the Same as just editing the normal code…
---
### Author:  [@TfGuy44](https://discourse.processing.org/u/TfGuy44)
#### Post date: [November 11, 2018, 9:50am UTC](https://discourse.processing.org/t/how-to-access-all-variables-of-a-single-class/5409/4 "2018-11-11T09:50:57Z")
Well, you could group all your variables by type.
```auto
class thing{
float[] xy = new float[2]; // xy[0] is x, xy[1] is y
String[] zw = new String[2];
boolean omega;
int foo;
thing(){} //A meh constructor, I know. ._.
void doThingForAllFloat(){
for( int i = 0; i < xy.length; i++){
xy[i] = do_thing( xy[i] );
}
}
}
```
Does that make any sense? It’s actually more confusing if you ask me…
---
### Author:  [@Architector\_4](https://discourse.processing.org/u/Architector_4)
#### Post date: [November 11, 2018, 11:12am UTC](https://discourse.processing.org/t/how-to-access-all-variables-of-a-single-class/5409/5 "2018-11-11T11:12:57Z")
It does make sense, and it pretty much answers the question - however it also means dealing with arrays, and remembering what is what in those arrays, so I’ll just stick to manual repeating, actually. I think I’ll remember to change everything I need if I change the class’s insides.
Thanks for the responses though!
---
### Author:  [@Lexyth](https://discourse.processing.org/u/Lexyth)
#### Post date: [November 11, 2018, 11:14am UTC](https://discourse.processing.org/t/how-to-access-all-variables-of-a-single-class/5409/6 "2018-11-11T11:14:56Z")
Sorry, there is just no practical way to do it. Though some Programms do this automatically, like eclipse.