public boolean insert(Person p){//2.Method
        SortedPersonListElement element, element2;
        int temp;
        SortedPersonListElement next1;
        Person p3;

        element2.setPerson(p);// auto sigrinoume
        element=head;           //______________________________incoming like tail
        while(element != null){
            p3 = element.getPerson();
            if(p3.equals(p)){
                temp=p3.compareTo(p);
                if(temp==-1){// to deksia megalitero
                    SortedPersonListElement myObject = new SortedPersonListElement();
                    next1=element.getNext();
                    previus1=element.getPrevius();
                    //myObject.next=element2.previus;
                    //myObject.previus=element
                }
                if(temp==0){
                    System.out.Println("einai isa");
                }
                if(temp==1){
                    System.out.Println("to aristera einai mikrotero");
                    element2.next=next1.getPrevius();
                    element2.previus=next1

                }
            }
            element=getNext();
        }
    }