java - How do change file names during the execution of the program -

i have run simulations, output should in files, number of outputs can changed simulation other, example, first simulation use 10 files, second 14 files. let's have n files

i declare n files using following instruction:

string path1="c:/users/desktop/path1.txt"; file file1 =new file(path1); 

to write file 1 use function:

write(my outputs list,path1,file1); 

during execution, according parameters, select file write on it, option without use of switch case instruction because not easy manage if number of files big.

with switch case like:

int choice1 = number; switch (choice1) { case 1 :         write(outputs ,path1,file1); break; case 2 :             write(outputs ,path2,file2); break; case 3 : ....... } 

i replace switch case other instruction,

for example, change path, used:

string path= "path"+number; 

where number number of path file write on it. can call function write(outputs, path, file), same thing file, not know how. please, help.

you can use 'file.renameto(someotherfile)`. might important though: reliable file.renameto() alternative on windows?