Method add

classpath/java/util/AbstractCollection.java:18–21

(T element)

 */
public abstract class AbstractCollection<T> implements Collection<T> {
  public boolean add(T element) {
    throw new UnsupportedOperationException("adding to "
                                            + this.getClass().getName());
  }

  public boolean addAll(Collection<? extends T> collection) {
    boolean result = false;