Learn Java from Scratch - A Beginner's Guide - Step 11 - List and ArrayList - Sorting - Implementing Comparable Interfac

The video tutorial addresses a compilation error encountered in a previous step and demonstrates how to implement the Comparable interface in a Student class. It explains the use of Integer.compare for sorting students by their IDs in ascending order and how to reverse the sort order. The tutorial concludes with a summary of the steps taken to implement the Comparable interface and sort students based on custom criteria.

What is the primary reason for implementing the Comparable interface in the Student class?

• To improve code readability

• To enable sorting of Student objects

• To add new methods to the Student class

• To handle compilation errors

What must be done when implementing an interface in Java?

• Use only abstract methods

• Override the main method

• Define all methods in the interface

• Create a new class for each method

How does the Integer.compare method help in sorting Student objects?

• It compares the names of students

• It compares the IDs of students

• It compares the ages of students

• It compares the grades of students

What is the result of Integer.compare when the first argument is less than the second?

• 1

• -1

• 0

• It throws an exception

How can the sorting order be reversed using Integer.compare?

• By changing the return type

• By modifying the Student class

• By using a different method

• By swapping the arguments