How to input values into psvm parameter 'String args[]' in a main method?

Question

I have the to classes VacationCostCalculator and a main:

public class Program {
    
    public static void main(String[] args) {
        if (args.length < 2) {
            System.out.println("Not enough input arguments to run this program");
        } else {
            String transportMethod = args[0];
            String distance = args[1];
            VacationCostCalculator calculator = new VacationCostCalculator(Double.parseDouble(distance));
            double result = calculator.costOfVacation(transportMethod);
            System.out.println(result);
        }
    }
}

package com.itminds.vacationcost;

    public class VacationCostCalculator {
    
    private double distanceToDestination;

    public VacationCostCalculator(double distance) {
        distanceToDestination = distance;
    }

    public double costOfVacation(String transportMethod) {
        switch (transportMethod) {
            case "Car":
                return distanceToDestination * 1;
            case "Plane":
                return distanceToDestination * 2;
            default:
                throw new UnsupportedOperationException();
        }
    }

    public double getDistanceToDestination() {
        return distanceToDestination;
    }

    public void setDistanceToDestination(double distanceToDestination) {
        this.distanceToDestination = distanceToDestination;
    }
}

My task is to use the right design patterns to finish this application, but I have never learned what the values in the parameter in main is for. I cant find a decent doc that exlplains it well. What do i have to do to make objects of the arguments bigger??? I dont even know what to ask for properly here.. How to run a sample test on this?? is it only through CMD terminal using Javac commands or can i test this by creating other classes that runs this????? i am currently using intellij