Class AbstractList

classpath/java/util/AbstractList.java:13–67

package java.util;

public abstract class AbstractList<T> extends AbstractCollection<T>
  implements List<T>
{
  protected int modCount;

  public boolean add(T o) {
    add(size(), o);
    return true;
  }

  public boolean addAll(Collection<? extends T> c) {
    return addAll(size(), c);
  }

  public boolean addAll(int startIndex, Collection<? extends T> c) {
    if (c == null) {
      throw new NullPointerException("Collection is null");
    }

    int index = startIndex;
    boolean changed = false;

    Iterator<? extends T> it = c.iterator();
    while (it.hasNext()) {
      add(index++, it.next());
      changed = true;
    }

    return changed;
  }

  public Iterator<T> iterator() {
    return listIterator();
  }

  public ListIterator<T> listIterator() {
    return new Collections.ArrayListIterator(this);
  }

  public int indexOf(Object o) {
    int i = 0;
    for (T v: this) {
      if (o == null) {
        if (v == null) {
          return i;
        }
      } else if (o.equals(v)) {
        return i;
      }

      ++ i;
    }
    return -1;
  }
}