How can I get a variable by adding strings [duplicate]

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.

What about putting them into a data structure like Array or List? — oliholz
– oliholz, Commented Apr 27, 2015 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. — Boris the Spider
– Boris the Spider, Commented Apr 27, 2015 at 15:54

Alex Salauyou · Accepted Answer · 2015-04-27 16:07:32Z

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, 2015 at 16:07

answered Apr 27, 2015 at 15:56

Alex Salauyou

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1 Comment

Maxtutorials2409 Over a year ago

Thanks this it what i meant :D

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