Package org.jmxtrans.agent.util

Class StringUtils2

java.lang.Object

org.jmxtrans.agent.util.StringUtils2

public class StringUtils2
extends Object

Yet another StringUtils class.

Author:

Cyrille Le Clerc

Method Summary

Modifier and Type	Method	Description
static String	abbreviate(String str, int max)	Abbreviates a String using ellipses.
static void	appendEscapedNonAlphaNumericChars(String str, boolean escapeDot, StringBuilder result)	Escape all non 'a' to 'z','A' to 'Z', '0' to '9' and '-' with a '_'.
static void	appendEscapedNonAlphaNumericChars(String str, StringBuilder result)	Escape all non 'a' to 'z','A' to 'Z', '0' to '9' and '-' with a '_'.
static List<String>	delimitedStringToList(String delimitedString)	Split given String.
static boolean	isNullOrEmpty(String value)
static String	join(List<String> tokens, String delimiter)	Join given tokens with given delimiter.
static String	reverseTokens(String str, String delimiter)	Reverse tokens of given tokenized str.
static String	trimToEmpty(String str)	if the given string is null, return "", else return String.trim().

Methods inherited from class java.lang.Object

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

Method Details

delimitedStringToList

public static List<String> delimitedStringToList(@Nullable
String delimitedString)

Split given String. Delimiters are ",", ";" and "\n".

Parameters:

delimitedString -

Returns:

splitted string or null if given delimitedString is null

join

public static String join(@Nullable
List<String> tokens,
@Nonnull
String delimiter)

Join given tokens with given delimiter. Sample: tokens "com", "mycompany, "ecommerce", "server1" with delimiter "." returns "com.mycompany.ecommerce.server1".

Parameters:

tokens -

delimiter -

Returns:

the joined tokens (null if given tokens is null

reverseTokens

public static String reverseTokens(@Nullable
String str,
@Nonnull
String delimiter)

Reverse tokens of given tokenized str.

Sample: "server1.ecommerce.mycompany.com" returns "com.mycompany.ecommerce.server1".

Parameters:

str -

delimiter -

Returns:

reversed string or null if given string is null

appendEscapedNonAlphaNumericChars

public static void appendEscapedNonAlphaNumericChars(@Nullable
String str,
boolean escapeDot,
@Nonnull
StringBuilder result)

Escape all non 'a' to 'z','A' to 'Z', '0' to '9' and '-' with a '_'. '.' is escaped with a '_' if escapeDot is true.

Parameters:

str - the string to escape

escapeDot - indicates whether '.' should be escaped into '_' or not.

result - the StringBuilder in which the escaped string is appended

appendEscapedNonAlphaNumericChars

public static void appendEscapedNonAlphaNumericChars(@Nonnull
String str,
@Nonnull
StringBuilder result)

Escape all non 'a' to 'z','A' to 'Z', '0' to '9' and '-' with a '_'.

Parameters:

str - the string to escape

result - the StringBuilder in which the escaped string is appended

isNullOrEmpty

public static boolean isNullOrEmpty(@Nullable
String value)

abbreviate

@Nonnull
public static String abbreviate(String str,
int max)

Abbreviates a String using ellipses. This will turn "Now is the time for all good men" into "Now is the time for..."

Parameters:

str - the String to abbreviate

max - the max number of chars of the abbreviated String

Returns:

the abbreviated string

trimToEmpty

@Nonnull
public static String trimToEmpty(@Nullable
String str)

if the given string is null, return "", else return String.trim().

Parameters:

str - the string to trim

Returns:

the trimmed string