Java - difference between length and length()

1. length

array.length - final variable applicable for arrays that tells us what is the size of the array.

2. length()

string.length() - a method which is applicable for string object, that returns the number of characters in the string.

.length - built-in field (array length):

String array = new String[5];        // new char[5], new int[5], etc.

System.out.println(array.length);    // 5

.length() - public method (String length, etc.):

String string = "12345";

System.out.println(string.length());  // 5