If i define an array with objects in it, can i then later add more?

Question

if i do,
int[] arr = {1,2}
can i then later do something along the lines of
arr[i] = 3

Answer 1

thank you

Answer 2

niclas You're welcome.

Answer 3

i always forget the semicolon because lately i have been using a language where u dont put semicolons

Answer 4

Is there any workaround?

Answer 5

bump