Why does this code in java not work?

Question

Why does this code in java not work?
public static boolean compare(String a, String b) {
for (int i = 0; i < a.length(); i++)
if (a[i] == b[i]) return true;
return false;
}
Error: Unresolved compilation problems:
The type of the expression must be an array type but it resolved to String.
This code I've got from Java Challenge wrote by Norayr Gasparyan

Answer 1

I'm not a Java Expert, but apparently you have to use charAt to access a character in a String.
So your comparison should read like:
if(a.charAt(i)==b.charAt(i))

Ref: https://stackoverflow.com/questions/21110379/must-be-an-array-type-but-resolved-to-string