How to send one variable from one class to another for gui purpose?

Question

I am using Eclipse/Java 7. I have a class, which gets some values from queries and saves them in the 2 dimensional array path. Then I have made another class which designs 2 linked blocks. What I want to do is get the values of path1[0] and path[2][0] etc from the first class and automatically place them in the designed blocks. Any ideas how to do it? Thanks in advance

Example

1st class (results from queries):

public class OntoQ extends JFrame {

    public static void main(String[] args) {


    String[][] path = new String[20][2];
    int pathi = 0;
    int pathj = 0;
....

2nd class (design):

import javax.swing.JFrame;
import com.mxgraph.swing.mxGraphComponent;
import com.mxgraph.view.mxGraph;


public class Design extends JFrame {

    public Design() {


        super("Test");



        mxGraph graph = new mxGraph();
        Object parent = graph.getDefaultParent();


        graph.getModel().beginUpdate();
        try
        {
            Object v1 = graph.insertVertex(parent, null, "path[1][0]", 20, 20, 80,
                    30);
            Object v2 = graph.insertVertex(parent, null, "path[2][0]" , 240, 150,
                    80, 30);
            graph.insertEdge(parent, null, "Edge", v1, v2);
        }
        finally
        {
            graph.getModel().endUpdate();
        }

        mxGraphComponent graphComponent = new mxGraphComponent(graph);
        add(graphComponent);


    }


    public static void main(String[] args)
    {
        Design frame = new Design();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 320);
        frame.setVisible(true);
    }

}