Hello I really need help writing this java program. Please provided the entire source code with screenshots if possible.

a. Define an Abstractclass named Drink which defines the following methods:

Constructor with two parameters: serialNo (drinks serial number) and description (brief description about the drink). A drink has a sugarContent which is by default is 0.

toString method that prints the serial number followed by the description and the sugar content of the drink.

An increaseSugarContent method that allow us to increase the sugar content by a particular integer amount. For example, we should be able to call increaseSugarContent as follows: increaseSugarContent(20);

An abstract method named getIngredients which returns a string with the drinks ingredients.

b. Define a Concrete class named Psi which extends the Drink class above. A Psi has as ingredients sugar and caffeine. The class constructor will initialize the Drink with a serial number equal to 10 and Great carbonated soda as a description