public void insertAfter(Object prevItem, Object newItem) {
ListElement newElem, nextElem, pointerElem;
pointerElem = startElem.getNextElem();
while (pointerElem != null && !pointerElem.getObj().equals(prevItem)) {
pointerElem = pointerElem.getNextElem();
}
newElem = new ListElement(newItem);
nextElem = pointerElem.getNextElem();
pointerElem.setNextElem(newElem);
newElem.setNextElem(nextElem);
}
public void delete(Object o) {
ListElement le = startElem;
while (le.getNextElem() != null && !le.getObj().equals(o)) {
if (le.getNextElem().getObj().equals(o)) {
if (le.getNextElem().getNextElem() != null) le.setNextElem(le.getNextElem().getNextElem());
else {
le.setNextElem(null);
break;
}
}
le = le.getNextElem();
}
}
public void writeList() {
ListElement le = startElem;
while (le != null) {
System.out.println(le.getObj());
le = le.getNextElem();
}
}
public ListElement getLastElem() {
ListElement le = startElem;
while (le.getNextElem() != null) {
le = le.getNextElem();
}
return le;
}
