info.javelot.functionalj.util
Class Strings

java.lang.Object
  info.javelot.functionalj.util.Strings

public final class Strings
extends Object

Methods concerning Strings.

Author:

Copyright © 2006 Frederic Daoud

Field Summary

static Function1<Integer,String>

length Function that returns the length of a String.

Method Summary

static String	concat(Collection<?> p_coll) Concatenates a Collection into a String, by concatenating together the String representations of each object in the collection.
static String	concat(Object[] p_array) Version of concat(Collection) that accepts an array.
static List<String>	intersperse(String p_string, List<String> p_list) Intersperses a String in between a List of Strings, to return a new List of Strings.
static List<String>	intersperse(String p_string, String[] p_strings) Version of intersperse(String, List) that accepts an array.
static int	length(String p_string) Returns the length of a string, returning zero if the string is null.
static String	toString(Object... p_array) Returns a String representation of an array of objects.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

length

public static Function1<Integer,String> length

Function that returns the length of a String. If the string is null, the function returns 0.

Method Detail

intersperse

public static List<String> intersperse(String p_string,
                                       List<String> p_list)

Intersperses a String in between a List of Strings, to return a new List of Strings. For example, intersperse(":", ["AB", "C", "DE", "F"]) returns ["AB", ":", "C", ":", "DE", ":", "F"].

Using concat(Collection) on that result will return "AB:C:DE:F".

Parameters:

p_string - the string to intersperse into the list of strings.

p_list - the list of strings.

intersperse

public static List<String> intersperse(String p_string,
                                       String[] p_strings)

Version of intersperse(String, List) that accepts an array.

See Also:

intersperse(String, List)

concat

public static String concat(Collection<?> p_coll)

Concatenates a Collection into a String, by concatenating together the String representations of each object in the collection.

Parameters:

p_coll - the collection to be concatenated.

Returns:

a single String which consists of the String representations of the objects from the collection, concatenated together.

concat

public static String concat(Object[] p_array)

Version of concat(Collection) that accepts an array.

toString

public static String toString(Object... p_array)

Returns a String representation of an array of objects.

Parameters:

p_array - the array for which to construct a String representation.

Returns:

a String of the form "[A, B, C, D]", with a String representation of each object in the array.

length

public static int length(String p_string)

Returns the length of a string, returning zero if the string is null.

Parameters:

p_string - the string for which to return the length.

Returns:

the length of the string, or 0 if the string is null.