main() {

    open java.io.FileReader on the file named in `args[0]`
    open java.util.Scanner on the file reader

    scan in n as an Int
    scan in radius as a Double
    create & initialize px, py, vx, vy, mass to be DoubleArray of size n
    create & initialize bodyName to be an Array<String> of size n, with
      each element initialized to empty string

    for i from 0 to n {
        scan in px[i]
        scan in py[i]
        scan in vx[i]
        scan in vy[i]
        scan in mass[i]
        scan in a name and assign appropriate path name
          to bodyName[i]
    }

    close the scanner
    close the file reader

    call the main method of Papplet
}

class NbodyPApplet {

    settings() {
        set the size of display window equal to the size of your
          background image
    }

    setup() {
        load background image
        for each body do
            load image corresponding to its name
        intialize minim
        load music file
        play music
        set frame rate if desired
    }

    fun transformX(x) {
         return the corresponding processing value of x-coord
           for the given x coord in Cartesian system
    }

    fun transformY(y) {
         return the corresponding processing value of y-coord
           for the given y coord in Cartesian system

    }

    fun draw() {
        for each body i do {
            for each body j different from i do {
                use Newton's formula to compute the gravitational force exerted by j on i
                break the force into an x component & y component, and update this into
                  the total forces acting along x axis & y axis on i
            }
            update vx[i] using the total force along x axis on i & mass of i
            update vy[i] using the total force along y axis on i & mass of i
        }
        display background image
        for each body i do {
            compute the new px[i] using vx[i] & deltaT
            compute the new py[i] using vy[i] & deltaT
            show the image of i at the processing point specified by (px[i], py[i]) in Cartesian
              system
        }

        /* debug statements as suggested in Checklist go here */
    }
}