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Class Lexicon

Object

Lexicon

All Implemented Interfaces:

Iterable<String>, Collection<String>, Set<String>

public class Lexicon
extends Object
implements Iterable<String>, Set<String>

This class is used to represent a lexicon, or word list. The main difference between a lexicon and a dictionary is that a lexicon does not provide any mechanism for storing definitions; the lexicon contains only words, with no associated information. It is therefore similar to a set of strings, but with a more space-efficient internal representation. The Lexicon essentially a Set of strings that supports efficient lookup operations for words and prefixes.

Constructor Summary

Constructors

Constructor and Description
Lexicon()
Lexicon(String filename)
Lexicon(String word1, String word2, String... words)

Method Summary

Modifier and Type	Method and Description
boolean	add(String word)
boolean	addAll(Collection<? extends String> c)
void	addWordsFrom(InputStream input)
void	addWordsFrom(Reader reader)
void	addWordsFrom(Scanner input)
void	addWordsFromFile(File file)
void	addWordsFromFile(String filename)
void	clear()
boolean	contains(Object o)
boolean	contains(String word)
boolean	containsAll(Collection<?> c)
boolean	containsPrefix(String prefix) Returns true if any words in the lexicon begin with prefix.
boolean	equals(Object o)
int	hashCode()
boolean	isEmpty()
Iterator<String>	iterator()
int	prefixCount()
boolean	remove(Object word)
boolean	remove(String word)
boolean	removeAll(Collection<?> c)
boolean	retainAll(Collection<?> c)
int	size()
Object[]	toArray()
<T> T[]	toArray(T[] a)
String	toString()

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Set

spliterator

Methods inherited from interface Collection

parallelStream, removeIf, stream

Methods inherited from interface Iterable

forEach

Constructor Detail

Lexicon

public Lexicon()

Lexicon

public Lexicon(String filename)

Lexicon

public Lexicon(String word1,
               String word2,
               String... words)

Method Detail

add

public boolean add(String word)

Specified by:

add in interface Collection<String>

Specified by:

add in interface Set<String>

addAll

public boolean addAll(Collection<? extends String> c)

Specified by:

addAll in interface Collection<String>

Specified by:

addAll in interface Set<String>

addWordsFrom

public void addWordsFrom(InputStream input)

addWordsFrom

public void addWordsFrom(Reader reader)

addWordsFrom

public void addWordsFrom(Scanner input)

addWordsFromFile

public void addWordsFromFile(File file)

addWordsFromFile

public void addWordsFromFile(String filename)

clear

public void clear()

Specified by:

clear in interface Collection<String>

Specified by:

clear in interface Set<String>

contains

public boolean contains(Object o)

Specified by:

contains in interface Collection<String>

Specified by:

contains in interface Set<String>

contains

public boolean contains(String word)

containsAll

public boolean containsAll(Collection<?> c)

Specified by:

containsAll in interface Collection<String>

Specified by:

containsAll in interface Set<String>

containsPrefix

public boolean containsPrefix(String prefix)

Returns true if any words in the lexicon begin with prefix. Like containsWord, this method ignores the case of letters so that "MO" is a prefix of "monkey" or "Monday". The empty string is a prefix of every string, so this method returns true when passed the empty string.

equals

public boolean equals(Object o)

Specified by:

equals in interface Collection<String>

Specified by:

equals in interface Set<String>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Collection<String>

Specified by:

hashCode in interface Set<String>

Overrides:

hashCode in class Object

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Collection<String>

Specified by:

isEmpty in interface Set<String>

iterator

public Iterator<String> iterator()

Specified by:

iterator in interface Iterable<String>

Specified by:

iterator in interface Collection<String>

Specified by:

iterator in interface Set<String>

prefixCount

public int prefixCount()

remove

public boolean remove(Object word)

Specified by:

remove in interface Collection<String>

Specified by:

remove in interface Set<String>

remove

public boolean remove(String word)

removeAll

public boolean removeAll(Collection<?> c)

Specified by:

removeAll in interface Collection<String>

Specified by:

removeAll in interface Set<String>

retainAll

public boolean retainAll(Collection<?> c)

Specified by:

retainAll in interface Collection<String>

Specified by:

retainAll in interface Set<String>

size

public int size()

Specified by:

size in interface Collection<String>

Specified by:

size in interface Set<String>

toString

public String toString()

Overrides:

toString in class Object

toArray

public Object[] toArray()

Specified by:

toArray in interface Collection<String>

Specified by:

toArray in interface Set<String>

toArray

public <T> T[] toArray(T[] a)

Specified by:

toArray in interface Collection<String>

Specified by:

toArray in interface Set<String>