prajna.text

Class StringUtils

java.lang.Object

prajna.text.StringUtils

public class StringUtils
extends java.lang.Object

Utility class for common string operations not supported by Java

Author:

Edward Swing

Constructor Summary

Constructors

Constructor and Description
StringUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.String	addCamelSpaces(java.lang.String str) Convert a string in camel notation to human readable text by inserting spaces before each word.
static int	calcWordDistance(java.lang.String str1, java.lang.String str2) implementation of the Levenshtein Word Distance algorithm.
static java.lang.String	toCamelCase(java.lang.String str) Convert a string to camel notation.
static java.lang.String	toInitialCaps(java.lang.String str) Convert a string to initial caps.
static java.util.List<java.lang.String>	tokenize(java.lang.String str) Return the tokens of a string.

Methods inherited from class java.lang.Object

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

Constructor Detail

StringUtils

public StringUtils()

Method Detail

addCamelSpaces

public static java.lang.String addCamelSpaces(java.lang.String str)

Convert a string in camel notation to human readable text by inserting spaces before each word. This method simply inserts a space before each capital letter following the first. For example, the string TheLazyDog would be converted to The Lazy Dog. If the initial letter is not capitalized, it is replaced with its uppercase equivalent.

Parameters:

str - the string to convert

Returns:

the converted string

calcWordDistance

public static int calcWordDistance(java.lang.String str1,
                   java.lang.String str2)

implementation of the Levenshtein Word Distance algorithm. The algorithm is good for measuring edit distance between two words and is normally used for spell checking and similarity sorting.

Parameters:

str1 - the first string

str2 - the second string

Returns:

the word distance

toCamelCase

public static java.lang.String toCamelCase(java.lang.String str)

Convert a string to camel notation. This method converts a string into a set of words with initial letters capitalized. All whitespace is removed from the converted string. For example, the string the lazy dog would be converted to TheLazyDog.

Parameters:

str - the string to convert

Returns:

the converted string

toInitialCaps

public static java.lang.String toInitialCaps(java.lang.String str)

Convert a string to initial caps. This method ensures the first letter of each word is capitalized, and the remaining letters in each word are not.

Parameters:

str - the string to convert

Returns:

the converted string

tokenize

public static java.util.List<java.lang.String> tokenize(java.lang.String str)

Return the tokens of a string. This method separates a string into a series of word tokens, according to the Penn Treebank conventions.

Parameters:

str - the original string

Returns:

the sequence of tokens as an array