The gravitational attraction between any two objects in the universe is given by the following formula:

Force of Gravity = (G * m * n) / r²

Where m and n are masses of the objects in kilograms, r is the distance between them in meters, and G is the gravitational constant 6.67 * 10^-11

java program that prompts the user to enter m, n, and r, then calculates and prints the Force of Gravity if the user inputs are valid.

• Use two-way selection (if-else) with logical operator (AND / OR) structure to validate the user inputs. Display an error message if the inputs are invalid.
• Basically, if all three values (m, n, and r) are greater than 0, they are valid. If one of them is less than or equal to 0, they are not valid.