Make these two separate classes(JAVA).

Class Person : Make a Java file Person.java.

Complete this Java class using the following specifications:

Every person has first and last names.

A constructor, which gets two parameters, first and last names, and initializes the corresponding instance variables.

Override the toString method, such that it returns first and last names with one space in between.

Class Building : Make a Java file Building.java.

Complete this Java class using the following specifications:

Every building has year of built and number of floors.

A default constructor, which initializes the year of built to the current year, and floor to 1. Note that current year must not be hard coded, like 2021.

Another constructor with two parameters, year of built and floor, which initializes the corresponding instance variables.