private  Thread thread=Thread.currentThread();

	 try {
         //...	что-то делаю

//теперь хочу просто закрыть (убить) поток
	 this .getThread().destroy();
	//this.getThread().stop();
	} catch (Exception ex){
	System.err.println("Error in Lizenz.makeLizenz()");
}

Exception in thread "main" java.lang.NoSuchMethodError
	at java.lang.Thread.destroy(Thread.java: 779 )

 /**
     * Destroys this thread, without any cleanup. Any monitors it has 
     * locked remain locked. (This method is not implemented.)
     */
     public   void  destroy() {
	 throw   new  NoSuchMethodError();
    }