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package java.util

public interface Collection<A> (pure interface)
The root interface in the collection hierarchy
public interface Comparator<A> (pure interface)
A comparison function, which imposes a total ordering on some collection of Objects
public interface Iterator<A> (pure interface)
An iterator over a Collection
public interface List<A> (pure interface)
An ordered Collection (also known as a sequence)
public interface ListIterator<A> (pure interface)
An Iterator for Lists that allows the programmer to traverse the List in either direction
public interface Map<A, B> (pure interface)
An object that maps keys to values
public interface Entry<A, B> (pure interface)
A Map entry (key-value pair)
public interface Set<A> (pure interface)
A Collection that contains no duplicate elements
public interface SortedMap<A, B> (pure interface)
A Map that further guarantees that it will be in ascending key order, sorted according to
public interface SortedSet<A> (pure interface)
A Set that further guarantees that it will be in ascending element order, sorted

public abstract class AbstractCollection<A> (pure interface)
This class provides a skeletal implementation of the Collection interface, to minimize
public abstract class AbstractList<A> (pure interface)
This class provides a skeletal implementation of the List interface to minimize the
public abstract class AbstractMap<A, B> (pure interface)
This class provides a skeletal implementation of the Map interface, to minimize the
public abstract class AbstractSequentialList<A> (pure interface)
This class provides a skeletal implementation of the List interface to minimize the
public abstract class AbstractSet<A> (pure interface)
This class provides a skeletal implementation of the Set interface to minimize the effort
public class ArrayList<A> (pure interface)
Resizable-array implementation of the List interface
public class Arrays (pure interface)
This class contains various methods for manipulating arrays (such as sorting and
public class Collections (pure interface)
This class consists exclusively of static methods that operate on or return Collections
public class HashMap<A, B> (pure interface)
Hash-table based implementation of the Map interface
public class HashSet<A> (pure interface)
This class implements the Set interface, backed by a hash table (actually a HashMap)
public class LinkedList<A> (pure interface)
Resizable array implementation of the List interface
public class TreeMap<A, B> (pure interface)
Red-Black tree based implementation of the Map interface
public class TreeSet<A> (pure interface)
This class implements the Set interface, backed by a TreeMap


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package java.util

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