java - How to Handle ArrayIndexOutOfBoundsException -

i getting -1 response. exception, how handle exception can avoid integer not match array.

constants.friends[integer.parseint(custom.getfriendslist())] 

for instance if array holds 4 items.

string[] mylist = {"one","two","three","four"}; 

if getting either -1 or value greater 3, how can handle them.

arrayindexoutofboundsexception unchecked exception, meaning signals programming errors, opposed conditions outside program's control. these exceptions should prevented, rather handled.

in specific instance, should check value before passing index array, this:

int pos = integer.parseint(custom.getfriendslist()); if (pos < 0 || pos >= constants.friends.length) {     // handle error , exit or re-read pos } // accessing friends[pos] safe now: string friend = constants.friends[pos];