Item % of partially implemented % of fully implemented
java.util
Collection
 95
size() : int
isEmpty() : boolean
contains(Object) : boolean
iterator() : Iterator
toArray() : Object[]
toArray(Object[]) : Object[]
toArray(IntFunction) : Object[]
add(Object) : boolean
remove(Object) : boolean
containsAll(Collection) : boolean
addAll(Collection) : boolean
removeAll(Collection) : boolean
removeIf(Predicate) : boolean
retainAll(Collection) : boolean
clear() : void
equals(Object) : boolean
hashCode() : int
spliterator() : Spliterator
stream() : Stream
parallelStream() : Stream