From what I have been reading, the compareTo() method returns the difference of the Unicode numerical values of two Strings when they are compared with each other. For instance, the String "hello" when compared with the String "hello" returns an integer value of zero, since they both have exactly the same Unicode characters in them. Based on my understanding of this method, "hello" should return zero when compared to "olleh", because the two Strings have the exact same Unicode characters in them. Instead, though, I am getting integer value of 7 returned to the console. Can someone break this down a bit for me to help me understand it better? Thanks in advance. Here is my code:

String str1 = "hello";
String str2 = "olleh";
System.out.println(str1.compareTo(str2)); // 7