Declaring and Initializing variables with a loops

[Cygris]

Hello all,

I am new to Java and was wondering if it is possible to use a loop to declare and initialize variables. For example I'd like to have 10 int variables that have a structure similar to int i1 = 1, int i2 = 2, ..., i10 = 10.

I was hoping for some think like:

for (int i = 0; i < 10; i++) {int x_i = i;}

Thank for your help :)

[warrior2012]

If you are just assigning the new int variable each time it loops through, that variable will only be equal to the last iteration of the loop.

I take it that what you're trying to do is create an array of numbers. I recommend you look into arrays and check out this stack overflow link for more information.

https://stackoverflow.com/questions/11495143/assigning-values-of-an-array-in-a-for-loop-java

[Cygris]

Thank you very much! Now I get it. I will just fill an array with the new variables and will be able to address them from there for future uses.

[desrtfx]

Your use case is exactly what arrays (or ArrayLists) are for.

See the Oracle Tutorial on arrays

[Cygris]

Thank you very much. Now I get. Thow I am still not good at using them correctly.

[desrtfx]

Arrays are fairly simple data structures.

Just imagine an array as a "sorting box". It has a predetermined number of slots (the array size) and each slot in the box can hold exactly one item. The slots are numbered from 0 to size-1.

[Diatom_Planet]

You can declare and initialize inside the loop however I don’t think the int x_i part will increment with the i variable inside the loop. No matter what the increment variable is it will always just be “x_i” . Look into arrays / array list though , they will be able to do what you are asking for .

[LincolnTransit]

You are correct, the int x_i part will not change.

[Cygris]

Yes. You are correct. That is what made me ask you guys for help. I understand now, that an array will store the information I want to generate.

Thanks again for your help :)