how to use long in string methods like charAt in java?

Question

how to use long in string methods like charAt in java??

String s="google";
long i=0;
System.out.println(s.charAt(i));

Do you have a String with over Integer.MAX_VALUE characters? — Eran, Aug 14 '18 at 09:56
How the answer is no if the reason you use long is because you believe int could be not enough xD — dbl, Aug 14 '18 at 10:00

Alan Deep · Accepted Answer · 2018-08-14T11:37:35.710

1

The maximum Integer value in Java is: 2,147,483,647. Which means that for s.charAt(i), i can have a max value of 2,147,483,647 (2 billion)

Will you really have a string having more than 2 billion bytes of length? int is fairly enough.

edited Aug 14 '18 at 11:37

answered Aug 14 '18 at 10:03

Alan Deep

2,037
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score 1 · Answer 2 · answered Aug 14 '18 at 10:04

Well, Integer.MaX_VALUE is 2,147,483,647 (2 mld). Even if you'd use ANSI encoding, string with this many characters would have almost 2 gigabytes! With UTF-8 encoding that'd be 8 gigabytes!

So an integer is perfectly fine for representing character's position within a string, and If you want to get that position by long, just cast it.

string.charAt((int) i);

how to use long in string methods like charAt in java?

2 Answers2