Thread: Can't run the method, Please help!!

package triangle_projection;
 
import java.io.*;
import java.awt.*;
 
public class Prim extends JComponent {
 
	public static int [][] Graph;
	public static int [][] Tree;
	public static int [] near;
 
	public static int n;
	public static int mincost = 0;
	public static int k, l;
 
        public Edge edges[] = new Edge[100];
        public Main main = new Main();
        public Graph graph;
 
        //create a minal spanning tree
	public static void prims()
	{
		getMinKL();
		mincost = Graph[k][l];
		Tree[1][1] = l;
		Tree[1][2] = k;
		for(int i=1; i<=n; i++)
			near[i] = (Graph[i][l]<Graph[i][k])?l:k;
		near[k] = near[l] = 0;
 
		for(int i=2; i<n; i++)
		{
			int j = getMin();
			Tree[i][1] = j; Tree[i][2] = near[j];
			mincost = mincost+Graph[j][near[j]];
			near[j] =0;
			for (int k=1; k<=n; k++)
				if( (near[k] !=0) && Graph[k][ near[k] ]> Graph[k][j] )
					near[k] =j;
		}
	}
 
        public int numofVer() { return n; } // return the total number of the node
 
        //get the original space distance of 2 points
        public int GetDis(int one, int two){
            int dis = Graph[one][two];
            return dis;
        }
 
        public static void main (String[] args) throws IOException
        {
		prims();
                [COLOR="Red"]//main.createNode();[/COLOR]
 
		System.out.println("\n\nSolution : \n\n");
 
                JFrame window = new JFrame();
                window.setBounds(500, 500, 500, 500);
                window.setBackground(new Color(255,255,255));
                window.getContentPane().add(new Graph());
                window.setVisible(true);
	}
}

package triangle_projection;
 
public class Main {
 
    private int n=0;   
    private Prim prim = new Prim();
    public int Vertnum = prim.numofVer();
    public Point pt = new Point();
    public Graph graph = new Graph();
    private Node One, Two;
 
    public void createNode() {
 
            //Random rand = new Random();
 
            for (int j=1; j<=Vertnum; j++){
                if (j == 1){
                    nodes[j] = new Node(0,0,j);
                }
                else if (j == 2){
                    int dis = prim.GetDis(1, 2);
                    nodes[j] = new Node(dis,0,j);
                }
                else{
                    for (int i=1; i<=3; i++){
                        dist2[i] = prim.GetDis(i, j);
                    }
                    for (int i=1; i<=3; i++){
                        if((i!=j)&&(i<j))
                        {
                            int x1 = pt.getx1(One, Two, dist2[2], dist2[3]);
                            int y1 = pt.gety1(One, Two, dist2[2], dist2[3]);
                            int x2 = pt.getx2(One, Two, dist2[2], dist2[3]);
                            int y2 = pt.gety2(One, Two, dist2[2], dist2[3]);
 
                            int n1 = graph.isNode(x1,y1);
                            int n2 = graph.isNode(x2,y2);
 
                            if ( n1 == -1){
                                if(x1 > 0 && y1 > 0){
                                nodes[i+2] = new Node(x1,y1,j);
                                }
                            }
 
                            if ( n2 == -1){
                                if(x2 > 0 && y2 > 0){
                                nodes[i+2] = new Node(x2,y2,j);
                                }
                            }
                         }
                    }
                }
            }
 
            for (int l=1; l<=Vertnum; l++){
                 for (int d=1; d<=3; d++){
                        if((d!=l)&&(d<l))
                        {
                            realDist(nodes[l], nodes[d]);
                        }
                }
            }
         }
    }
}

 
package triangle_projection;
import java.awt.*;
 
public class Graph extends Canvas{
 
....
 
        /*public Graph(int maxx, int maxy) {
		mx = maxx;
		my = maxy;
		setSize(mx, my);
		ni=0; ei=0;
		nodes = new Node[Vertnum]; //create a Node array of size 9
		edges2 = new Edge[Vertnum*(Vertnum-1)/2]; //create an Edge array of size 36
	}*/
 
        //paint method draws graphics on the screen and called implicitly
	public void paint(Graphics g) {
		for (int i=0;i < ei;i++) {
			Edge e = edges2[i];
			/* draw an edge */
			drawEdge(e.firstNode(), e.secondNode(), e.weight(), g);
		}
		for (int i=0;i < ni;i++) {
			Node n = nodes[i];
			/* draw a node */
			drawNode(n.xPos()-8, n.yPos()-8, n.no()+1, g);
		}
	}
 
 
        //drawNode method draws a node at the given coordinates and in given the color
	private void drawNode(int x, int y, int no, Graphics g) {
		g.fillOval(x, y, 17, 17); // draw an oval which is filled with the current color
		g.setColor(blue); // set current color to black
		g.drawOval(x, y, 16, 16); // draw an oval
		g.drawString(Integer.toString(no), x+5, y+13); // draw the node number
	}
 
        //drawEdge method draws an edge between the given points and in the given color
	private void drawEdge(Node first, Node second, int weight, Graphics g) {
		int hyp, x, y;
		int x1 = first.xPos();
		int y1 = first.yPos();
		int x2 = second.xPos();
		int y2 = second.yPos();
		x = x2 - x1;
		y = y2 - y1;
		hyp = (int) Math.sqrt(x*x + y*y); // calculate the distance between the given two point
                g.drawLine(x1, y1, x2, y2); // draw a line between the given points
		x1 = x1 + (int)((x/hyp)*(hyp/2)); // calculate the middle of the given two points
		y1 = y1 + (int)((y/hyp)*(hyp/2));
		g.setColor(yellow); // set current color to yellow
		g.fillOval(x1-8, y1-8, 17, 17);
		if (weight < 10)
			g.drawString(Integer.toString(weight), x1-3, y1+5); // draw the edge weight
		else
			g.drawString(Integer.toString(weight), x1-6, y1+5); // draw the edge weight
	}
        //numOfNodes method return the number of nodes on the screen
	public int numOfNodes() { return ni; }
 
}

How can i run the createNode() in Main.java, in the Prim. java?? The error is Non-static variable cannot be reference on static content. So what can i change to make it work?
Also, the Prim.java is also not showing the jframe which is connected to Graph.java....
Can anyone please help??
Thank you