public class CollectionFilter {
+ /**
+ * Filters a collection by adding all elements in the from collection
+ * that satisfy a given condition to the to collection.
+ * @param <T> Type of contained element.
+ * @param aFrom From container to which the condition is applied.
+ * @param aTo To container to which matching elements are added.
+ * @param aCondition Condition by which elements are matched.
+ */
public static <T> void filter(Collection<T> aFrom, Collection<T> aTo, Condition<T> aCondition) {
for (T t: aFrom) {
if ( aCondition.matches(t)) {