Our example demonstrates sorting in Java using the Collections class for built-in types. We’ll look at sorting for built-ins first.
To run the program, compile it and then use java to execute:
In this Java version, we use the Collections.sort() method to sort lists of Comparable objects. The String and Integer classes both implement Comparable, so we can sort them directly.
Java doesn’t have a built-in method to check if a list is sorted, so we implemented our own isSorted() method. This method works for any list of Comparable objects.
The structure and functionality of the program remain similar to the original, but we’ve adapted it to use Java’s syntax and standard library methods.