org.dbrain.data.util

Class Strings

java.lang.Object

org.dbrain.data.util.Strings

public class Strings
extends Object

Contains static methods to manipulate strings.

Field Summary

Fields

Modifier and Type	Field and Description
static Comparator<String>	NATURAL_ORDER Natural order for strings.

Constructor Summary

Constructors

Constructor and Description
Strings()

Method Summary

Modifier and Type	Method and Description
static String	blankToNull(String s) Apply a transform that will replace blank values with null.
static boolean	isBlank(CharSequence s) Verify that the string contains all blank characters or is null.
static String	lowercase(String s, Locale locale) Apply a lowercase transform to the string.
static String	ltrim(String s)
static String	maxLength(String s, int length) Apply a constraint over string length.
static String	nullToBlank(String s) Apply a transform that will replace null values with blank.
static String	rtrim(String s) Trim trailing spaces.
static String	trim(String s) Null-safe trim.
static String	uppercase(String s, Locale locale) Apply an uppercase transform to the string.

Methods inherited from class java.lang.Object

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

Field Detail

NATURAL_ORDER

public static final Comparator<String> NATURAL_ORDER

Natural order for strings.

Constructor Detail

Strings

public Strings()

Method Detail

trim

public static String trim(String s)

Null-safe trim.

Parameters:

s - The String to trim.

Returns:

A string with.

rtrim

public static String rtrim(String s)

Trim trailing spaces.

Parameters:

s - The String to trim.

Returns:

a copy of the string with the trailing spaces removed.

ltrim

public static String ltrim(String s)

Returns:

a copy of the string with the leading spaces removed.

isBlank

public static boolean isBlank(CharSequence s)

Verify that the string contains all blank characters or is null. Examples of blank strings : "", " ", null

Returns:

true if string is blank.

blankToNull

public static String blankToNull(String s)

Apply a transform that will replace blank values with null.

nullToBlank

public static String nullToBlank(String s)

Apply a transform that will replace null values with blank.

maxLength

public static String maxLength(String s,
                               int length)

Apply a constraint over string length.

lowercase

public static String lowercase(String s,
                               Locale locale)

Apply a lowercase transform to the string.

Parameters:

locale - The locale to use in the transformation,

Returns:

A lowercase string.

uppercase

public static String uppercase(String s,
                               Locale locale)

Apply an uppercase transform to the string.

Parameters:

locale - The locale to use in the transformation,

Returns:

A uppercase string.