Exercise 1: Based on the following UML: Create the Java class. Use a test program to create three objects of type City: cityl: Paris / 2141000 of population /105.4 km city2: London / 8136000 of population/1572 km city3: no details (call default constructor) Update "city3 to: Tokyo /9273000 of population/2188 km. Compare between the cities, then find and print the details of the smallest city in area. Afterward, find and print the details of the biggest city in population. Call peoplePerKM2 to find the number of people per km for each city, and then print the result. City - name: String - population: int - area: double + City 0 + City (String, int, double) + setName(String): void + getName(): String + set Population(int): void + get Population(): int + setArea(double): void + getArea(): double + peoplePerKM20): int + toString(): String