Complete Java SE 8 Developer Bootcamp - Comparable

The video tutorial explains how to sort collections and arrays in Java, focusing on the natural ordering of strings and primitives. It introduces the Comparable interface for sorting custom classes and provides an example using a MyDate object. The tutorial covers implementing the compareTo method to define sorting logic and discusses handling runtime exceptions. It also explains how to adjust sorting order from ascending to descending.

What is the natural ordering in Java based on?

• Numerical order

• Unicode values

• Alphabetical order

• ASCII values

Why do we need to implement the Comparable interface for custom classes?

• To allow custom sorting logic

• To improve performance

• To avoid syntax errors

• To enable automatic sorting

What exception is thrown when trying to sort a custom class without implementing Comparable?

• IllegalArgumentException

• ClassCastException

• ArrayIndexOutOfBoundsException

• NullPointerException

In the compareTo method, what does a positive return value indicate?

• The current object is not comparable

• The current object should be sorted before the compared object

• The current object is equal to the compared object

• The current object should be sorted after the compared object

How can you modify the compareTo method to sort in descending order?

• By returning the opposite of the current logic

• By using a different sorting algorithm

• By changing the data type of the fields

• By implementing a new interface