How to get the message from a Runnable class

Question

The Schedule class is actually a JFrame, what I want to do is to "get" the message from Scheduler Class and display it in a JTextField, to let user know what is doing.
How can I approach this?
public class Schedule {
    @SuppressWarnings("static-access")
    public static void main(String args[]) throws InterruptedException {
        final Scheduler s = new Scheduler();
        Thread t = new Thread(s);
        t.start();
public class Scheduler implements Runnable{
private static int actionType;
private static String msg;
    public static void setMsg(String msg) {
        Scheduler.msg = msg;
    public static String getMsg() {
        return msg;
    public void run() {
        //System.out.println((int)(Math.random() * 1000));
        actionType = 1;
        while(true){
            try {
                switch(actionType){
                    case 1:
                        setMsg("Process actionType: "+actionType);
                        break;
                        case 2:
                        Thread.sleep(2000L);
                        setMsg("Process actionType: "+actionType);
                        break;
                        case 3:
                        Thread.sleep(2000L);
                        setMsg("Process actionType: "+actionType);
                        break;
                        case 4:
                        Thread.sleep(2000L);
                        setMsg("Process actionType: "+actionType);
                        break;
                actionType++;
                if(actionType>4){
                    actionType = 1;
            } catch (InterruptedException ex) {
                System.out.println("Scheduler.run:"+ex.toString());
}

Answer 1

Or with only one loop:
        int actionType = 0;
        while (true)
            actionType = (actionType % 4) + 1;
            msg = "Process actionType: " + actionType;
            try
                Thread.sleep(2000L);
            catch (InterruptedException ex)
                System.out.println("Scheduler.run:" + ex.toString());
        }