class der udregner ligningen for en graf udfra 2 koordinatsæt

Jeg har lavet følgende kode i "LineEquation":



import javax.swing.JFrame;

public class LineEquation
{
    public static void main (String[] args)
    {
        JFrame frame = new JFrame ("Entry-angle equals exit-angle");
        frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
       
        LineEquationPanel panel = new LineEquationPanel();
        frame.getContentPane().add(panel);
       
        frame.pack();
        frame.setVisible(true);
    }
}







Derudover har jeg følgende i "LineEquationPanel":



import javax.swing.JPanel;
import java.awt.*;

public class LineEquationPanel extends JPanel
{
    private int ln1x1, ln1y1, ln1x2, ln1y2;
    private double denominator, denominatorTest, lineOneCalc_1, lineOneCalc_2, lineOneCalc_3, lineOneCalc_4;
    private String plusMinus;
   
    public LineEquationPanel ()
    {
        setBackground (Color.blue);
        setPreferredSize (new Dimension(400, 400));
        setFont (new Font("Arial", Font.BOLD, 14));
       
        ln1x1 = 10;
        ln1y1 = 250;
        ln1x2 = 350;
        ln1y2 = 100;
       
        // Figures out the formula of the line
        lineOneCalc_1 = ln1x2-ln1x1; // how big an x-value
        lineOneCalc_2 = ln1y2-ln1y1; // how big an y-value
        denominatorTest = lineOneCalc_1;
        denominator = 1;
       
        // Finds the easiest form of the formula f.eks x+4=0
       
        if (denominatorTest >=1)
        {
            while (denominatorTest != 1)
            {
                denominatorTest--;
                denominator++;
            }
        }
       
        lineOneCalc_3 = lineOneCalc_2/denominator; //Which nr to put in front of the x in the formula
        lineOneCalc_4 = ln1y1+(-ln1x1*lineOneCalc_3); //Where does the line cross the y-axis
       
        // Tjecks if the line meets y-axis at a positive or negative value, and adds a minus if necessary
        if(lineOneCalc_4 < 0)
        {
        plusMinus = "";
        }
        else
        {
        plusMinus = "+";
        }
    }
   
    public void paintComponent (Graphics page)
    {
        super.paintComponent (page);
       
        page.setColor (Color.yellow);
        page.drawLine (ln1x1, ln1y1, ln1x2, ln1y2);
       
        page.drawString ("The Formula is: " +lineOneCalc_3 +"x " + plusMinus +lineOneCalc_4+" = 0", 50, 50);
       
    }
}


Jeg vil gerne have lavet en class som laver x antal linjer udfra denne kode?

Hvordan gør jeg det.