Java String array: is there a size of method?

Question

I come from a php background and in php, there is an array_size() function which tells you how many elements in the array are used.

Is there a similar

Answer 1

There is a difference between length of String and array to clarify:

int a[] = {1, 2, 3, 4};
String s = "1234";

a.length //gives the length of the array

s.length() //gives the length of the string