How to store all loop data in an array out side of the for loop in java ?

Question

for(int I=0; I<a.length(); I++)
{
arr[I]= Integer.toString[I]
}
String a = arr[I];

this is wrong code, but I want to pring the array of this for loop into a string as
a= "ab","ef","jk","we".
like that...
is it possible to do so...

Answer 1

try
String a = Arrays.toString(arr);

result:
"[0,1,2,3,4,5]"