Java Clone (not work)

package javaapplication9;

import java.util.Timer;
import java.util.TimerTask;

public class JavaApplication9 {

    Pot pot;
    Pot initPot;
    Timer timer;

    public static void main(String[] args) {
        JavaApplication9 app = new JavaApplication9();
        app.init();
        app.run();
    }

    public void init() {
        pot = new Pot();
        pot.init();

        pot.setParams(1, 2, 3, 4);

        timer = new Timer();
    }

    public void run() {
        try {
            pot.initPot = (Pot) pot.clone();
            initPot = (Pot) pot.clone();
        } catch (CloneNotSupportedException ex) {
            System.out.println("Объект не может быть клонированным.");
        }

        timer.schedule(new timerAction(), 1000);
        timer.schedule(new timerAction(), 1000);
        timer.schedule(new timerAction(), 1000);
    }

    class timerAction extends TimerTask {

        @Override
        public void run() {
            pot.setParams(pot.params.param1 + 1,
                    pot.params.param2 + 1,
                    pot.params.param3 + 1,
                    pot.params.param4 + 1);

            System.out.println("pot.initPot: " + pot.initPot.params.param1);
            System.out.println("initPot: " + initPot.params.param1);
        }
    }
}


public class Pot implements Cloneable {

    PotParams params;
    Pot initPot;

    public void init() {
        params = new PotParams();
    }

    public void setParams(double p1, double p2, double p3, double p4) {
        params.param1 = p1;
        params.param2 = p2;
        params.param3 = p3;
        params.param4 = p4;
    }

    @Override
    public Pot clone() throws CloneNotSupportedException {
        return (Pot) super.clone();
    }
}



public class PotParams {

    public double param1;
    public double param2;
    public double param3;
    public double param4;
}