Mine

public class c_easter_proxy extends JFrame implements ActionListener,Runnable {
public String q = "";


//THREAD RNNING

      public void run() {
        while(q == "") {
try {

Thread.sleep(2000);
System.out.println("yo");
    } catch(InterruptedException i) { ta1.append("\nsystem error: "+i); }
  }
}


 // THREAD STARTING
        private  void alusta_proxi_thread()
        throws java.lang.InterruptedException {

            Runnable ot = new c_easter_proxy();
            Thread th = new Thread(ot);
            th.start();
        }


// ACTION PERFORM 
    public void actionPerformed(ActionEvent e)  {
       JButton o = (JButton)e.getSource();
      if(o.getText() == "Alusta PROXY_OTSINGUT") {
try { alusta_proxi_thread(); 
         b1.setEnabled(false);
         b2.setEnabled(true);
ta1.append("\nproxy otsing käib..");
} catch(InterruptedException i) { ta1.append("\nsystem error: "+i); }
}  else if(o.getText() == "Lõpeta PROXY_OTSING") {
         b1.setEnabled(true);
         b2.setEnabled(false);
q = "1"; // Changing value of q
ta1.append("\nproxy otsing lõpetatud.");
}
    } // End of actionPerformed