How two strings in Java compare size

Use the String.CompareTo method:

The return value of CompareTo () is int, which is the size of the corresponding character (ASCII code order) first
1. If string equals return value 0
2. If the first character and the first character of the parameter are not equal, the end comparison returns the difference between them (ASCII code value) (negative value before the string is less than the after string, positive before the string is greater than the string)











System.out.println (S1.compareto (S5)); -2 ("A" ASCII code is a, "C" ASCII code is 99, so return-2)

How two strings in Java compare size