Deleting Elements from List

public boolean delete(ListNode head, Object a){
ListNode element=head;
if(element==null)
return false;
if(element.equals(a)){
head=element.next;
return true;
}
else{
while(element){
if(element.next.equals(a)){
element.next=a.next;
return true;
}
element=element.next;
}
return false;
}
}