com.mockrunner.util.common

Class StringUtil

java.lang.Object

com.mockrunner.util.common.StringUtil

public class StringUtil
extends Object

Simple util class for String related methods.

Constructor Summary

Constructors

Constructor and Description
StringUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static void	appendObjectsAsString(StringBuffer buffer, List data) Appends the entries in the specified List as strings with a terminating "\n" after each row.
static void	appendTabs(StringBuffer buffer, int number) Appends number tabs (\t) to the buffer.
static int	compare(String string1, String string2) Compares two strings and returns the last index where the two string are equal.
static int	countMatches(String string, String other) Returns how many times string contains other.
static String	emptyStringToNull(String string) Returns null, if the specified string is null or the empty string.
static String	fieldToString(String fieldName, Object field) Helper method for toString() implementations.
static boolean	isEmptyOrNull(String string) Returns if the specified string is null or the empty string.
static String	lowerCase(String string, int index) Converts the character at the specified index to lowercase and returns the resulting string.
static String	lowerCase(String string, int startIndex, int endIndex) Converts the character in the specified index range to lowercase and returns the resulting string.
static boolean	matchesContains(String source, String target, boolean caseSensitive) Returns if source contains target, ignoring case, if caseSensitive is false.
static boolean	matchesExact(String source, String target, boolean caseSensitive) Returns if the specified strings are equal, ignoring case, if caseSensitive is false.
static boolean	matchesPerl5(String source, String target, boolean caseSensitive) Returns if the regular expression target matches source, ignoring case, if caseSensitive is false.
static String	replaceAll(String source, String match, String replacement) Replaces all occurrences of match in source with replacement.
static String[]	split(String string, String delim, boolean doTrim) Splits a string into tokens.

Methods inherited from class java.lang.Object

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

Constructor Detail

StringUtil

public StringUtil()

Method Detail

isEmptyOrNull

public static boolean isEmptyOrNull(String string)

Returns if the specified string is null or the empty string.

Parameters:

string - the string

Returns:

true if the specified string is null or the empty string, false otherwise

emptyStringToNull

public static String emptyStringToNull(String string)

Returns null, if the specified string is null or the empty string. Returns the specified string otherwise.

Parameters:

string - the string

Returns:

null if the specified string is null or the empty string, the specified string otherwise

replaceAll

public static String replaceAll(String source,
                String match,
                String replacement)

Replaces all occurrences of match in source with replacement.

Parameters:

source - the source string

match - the string that is searched

replacement - the replacement string

Returns:

the modified string

Throws:

IllegalArgumentException - if any argument is null or if match is the empty string

compare

public static int compare(String string1,
          String string2)

Compares two strings and returns the last index where the two string are equal. If the first characters of the two string do not match or if at least one of the two strings is empty, -1 is returned.

Parameters:

string1 - the first string

string2 - the second string

Returns:

the last index where the strings are equal

lowerCase

public static String lowerCase(String string,
               int index)

Converts the character at the specified index to lowercase and returns the resulting string.

Parameters:

string - the string to convert

index - the index where the character is set to lowercase

Returns:

the converted string

Throws:

IndexOutOfBoundsException - if the index is out of range

lowerCase

public static String lowerCase(String string,
               int startIndex,
               int endIndex)

Converts the character in the specified index range to lowercase and returns the resulting string. If the provided endIndex is smaller or equal to startIndex, the endIndex is set to startIndex + 1.

Parameters:

string - the string to convert

startIndex - the index to start, inclusive

endIndex - the index to end, exclusive

Returns:

the converted string

Throws:

IndexOutOfBoundsException - if the index is out of range

fieldToString

public static String fieldToString(String fieldName,
                   Object field)

Helper method for toString() implementations. Returns a string "field name: value". Handles null values, collections and arrays. If the field is a collection or an array, the returned string will be:
"field name 0: value0\nfield name 1: value1"

Parameters:

fieldName - the field name

field - the field value

Returns:

a suitable string for toString() implementations

appendObjectsAsString

public static void appendObjectsAsString(StringBuffer buffer,
                         List data)

Appends the entries in the specified List as strings with a terminating "\n" after each row.

Parameters:

buffer - the buffer

data - the List with the data

appendTabs

public static void appendTabs(StringBuffer buffer,
              int number)

Appends number tabs (\t) to the buffer.

Parameters:

buffer - the buffer

number - the number of tabs to append

split

public static String[] split(String string,
             String delim,
             boolean doTrim)

Splits a string into tokens. Similar to StringTokenizer except that empty tokens are recognized and added as null. With a delimiter of ";" the string "a;;b;c;;" will split into ["a"] [null] ["b"] ["c"] [null].

Parameters:

string - the String

delim - the delimiter

doTrim - should each token be trimmed

Returns:

the array of tokens

countMatches

public static int countMatches(String string,
               String other)

Returns how many times string contains other.

Parameters:

string - the string to search

other - the string that is searched

Returns:

the number of occurences

matchesExact

public static boolean matchesExact(String source,
                   String target,
                   boolean caseSensitive)

Returns if the specified strings are equal, ignoring case, if caseSensitive is false.

Parameters:

source - the source String

target - the target String

caseSensitive - is the comparison case sensitive

Returns:

true if the strings matches false otherwise

matchesContains

public static boolean matchesContains(String source,
                      String target,
                      boolean caseSensitive)

Returns if source contains target, ignoring case, if caseSensitive is false.

Parameters:

source - the source String

target - the target String

caseSensitive - is the comparison case sensitive

Returns:

true if the strings matches false otherwise

matchesPerl5

public static boolean matchesPerl5(String source,
                   String target,
                   boolean caseSensitive)

Returns if the regular expression target matches source, ignoring case, if caseSensitive is false.

Parameters:

source - the source String

target - the target String

caseSensitive - is the comparison case sensitive

Returns:

true if the strings matches false otherwise