How can I get a variable by adding strings

Question

I have for example:

String invslot_ = "invslot_";
int i = 0;

Now I have a while(i < 44) loop and I want it every time it loops to "add" invslot_ and i. (Yes I could do invslot_ + i !)

But I want that infslot_ + 1 is recognized as a variable I have defined earlier!

I hope you understand what I mean, please answer if you have an idea.

You are looking for an [`Array`](https://docs.oracle.com/javase/tutorial/java/nutsandbolts/arrays.html) — Alex K., Apr 27 '15 at 15:53
What about putting them into a data structure like Array or List? — oliholz, Apr 27 '15 at 15:53
No idea what you mean, but almost all "I want a `String` to reference a variable name" type questions have the same answer - use a [`Map`](https://docs.oracle.com/javase/tutorial/collections/interfaces/map.html). — Boris the Spider, Apr 27 '15 at 15:54

Alex Salauyou · Accepted Answer · 2015-04-27T16:07:32.377

0

Map<String, Number> vars = new HashMap<>();
vars.put("invslot_1", 3267);

for (int i = 0; i < 44; i++) 
    if (!vars.contains("invslot_" + i))     // put only if "var" is not already "assigned"
        vars.put("invslot_" + i, i);

System.out.println(vars.get("invslot_1"));  // 3267
System.out.println(vars.get("invslot_11")); // 11

edited Apr 27 '15 at 16:07

answered Apr 27 '15 at 15:56

Alex Salauyou

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Thanks this it what i meant :D – Maxtutorials2409 Apr 27 '15 at 16:09

How can I get a variable by adding strings

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