Package com.github.toolarium.common.util

Class StringUtil

java.lang.Object

com.github.toolarium.common.util.StringUtil

public final class StringUtil
extends java.lang.Object

String util class

Method Summary

Modifier and Type	Method	Description
java.lang.String	changeFirstLetterToLowerCase(java.lang.String name)	Changes the first letter of the given String to a lower case letter.
java.lang.String	changeFirstLetterToUpperCase(java.lang.String name)	Changes the first letter of the given String to an upper case letter.
int	countCharacters(java.lang.String input, char ch)	Counts a given character in the given String.
int	countEndingCharacter(java.lang.String input, char ch)	Count of a string a given ending character how many times it is existing
java.lang.String	fromCamelCaseToSnakeCase(java.lang.String data, boolean toLowerCase)	Convert a given string from CamelCase notation to upper case formated string.
static StringUtil	getInstance()	Get the instance
java.lang.String	newString(char character, int num)	New string with given length and filled up with the given character
java.lang.String	newString(java.lang.CharSequence input, int num)	New string builder
java.lang.StringBuilder	newStringBuilder(char character, int num)	New string builder with given length and filled up with the given character
java.lang.StringBuilder	newStringBuilder(java.lang.CharSequence input, int num)	New string builder
java.lang.String[]	splitAsArray(java.lang.String expression, java.lang.String splitString)	Split a string into an array
java.util.List<java.lang.String>	splitAsList(java.lang.String expression, java.lang.String splitString)	Split a string into a list
java.lang.String	toCamelCase(java.lang.String data, boolean startWithLowerCase)	Convert a given string to CamelCase formated string (lower/upper or pascal case).
java.lang.String	toSnakeCase(java.lang.String data)	Convert a given string to SnakeCase formated string.
java.lang.String	toString(byte[] b)	Converts a given byte array to a string representation
java.lang.String	toString(byte[] b, int ofs, int len)	Converts a given byte array to a string representation
java.lang.String	toString(java.lang.Object[] array)	Converts the given string array to a string
java.lang.String	toString(java.lang.Object[] array, java.lang.String sep)	Converts the given array to a string
java.lang.String	toString(java.lang.String[] array)	Converts the given string array to a string
java.lang.String	toString(java.lang.String[] array, java.lang.String sep)	Converts the given string array to a string
java.lang.String	trimLeft(java.lang.String data)	Trims a given string from the left side.
java.lang.String	trimLeft(java.lang.String data, char ch)	Trims a given string from the left side.
java.lang.String	trimRight(java.lang.String data)	Trims a given string from the right side.
java.lang.String	trimRight(java.lang.String data, char ch)	Trims a given string from the right side.
java.lang.String	width(java.lang.CharSequence text, int width)	Format a given string to a given length and fill up with the given character Example:
java.lang.String	width(java.lang.CharSequence text, int width, char fillupChar, boolean cutRight)	Format a given string to a given length and fill up with the given character Example:

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static StringUtil getInstance()

Get the instance

Returns:

the instance

newStringBuilder

public java.lang.StringBuilder newStringBuilder(java.lang.CharSequence input,
                                                int num)

New string builder

Parameters:

input - the input string to repeat

num - the number of repetitions

Returns:

the prepared string

newStringBuilder

public java.lang.StringBuilder newStringBuilder(char character,
                                                int num)

New string builder with given length and filled up with the given character

Parameters:

num - the number of repetitions

character - character to fill up the string

Returns:

a filled up string

newString

public java.lang.String newString(java.lang.CharSequence input,
                                  int num)

New string builder

Parameters:

num - the number of repetitions

input - the input string to repeat

Returns:

the prepared string

newString

public java.lang.String newString(char character,
                                  int num)

New string with given length and filled up with the given character

Parameters:

num - the number of repetitions

character - character to fill up the string

Returns:

a filled up string

width

public java.lang.String width(java.lang.CharSequence text,
                              int width)

Format a given string to a given length and fill up with the given character Example:

   input: 
      text:       "fobar"
      width:      8
      fillupChar: '-'
      cutRight: false
   output:
      fobar---
 

Parameters:

text - the string to test

width - the width of the string

Returns:

the formated string

width

public java.lang.String width(java.lang.CharSequence text,
                              int width,
                              char fillupChar,
                              boolean cutRight)

Format a given string to a given length and fill up with the given character Example:

   input: 
      text:       "fobar"
      width:      8
      fillupChar: '-'
      cutRight: false
   output:
      fobar---
 

Parameters:

text - the string to test

width - the width of the string

fillupChar - character to fill up the string

cutRight - if the given string is too long then cut it on the right side

Returns:

the formated string

countCharacters

public int countCharacters(java.lang.String input,
                           char ch)

Counts a given character in the given String.

Parameters:

input - the string to count the characters.

ch - the character to count.

Returns:

the number of occurrences of the given character in the given string

countEndingCharacter

public int countEndingCharacter(java.lang.String input,
                                char ch)

Count of a string a given ending character how many times it is existing

Parameters:

input - the input string

ch - the character to test

Returns:

the number of found ch characters at the end

trimRight

public java.lang.String trimRight(java.lang.String data)

Trims a given string from the right side.

Parameters:

data - the string to format

Returns:

the trimed string

trimRight

public java.lang.String trimRight(java.lang.String data,
                                  char ch)

Trims a given string from the right side.

Parameters:

data - the string to format

ch - the character to trim from the string

Returns:

the trimed string

trimLeft

public java.lang.String trimLeft(java.lang.String data)

Trims a given string from the left side.

Parameters:

data - the string to format

Returns:

the trimed string

trimLeft

public java.lang.String trimLeft(java.lang.String data,
                                 char ch)

Trims a given string from the left side.

Parameters:

data - the string to format

ch - the character to trim from the string

Returns:

the trimed string

toString

public java.lang.String toString(java.lang.String[] array)

Converts the given string array to a string

Parameters:

array - the data to parse

Returns:

the converted string

toString

public java.lang.String toString(java.lang.String[] array,
                                 java.lang.String sep)

Converts the given string array to a string

Parameters:

array - the data to parse

sep - the separator

Returns:

the converted string

toString

public java.lang.String toString(java.lang.Object[] array)

Converts the given string array to a string

Parameters:

array - the data to parse

Returns:

the converted string

toString

public java.lang.String toString(java.lang.Object[] array,
                                 java.lang.String sep)

Converts the given array to a string

Parameters:

array - the data to parse

sep - the separator

Returns:

the converted string

toString

public java.lang.String toString(byte[] b)

Converts a given byte array to a string representation

Parameters:

b - the bytes

Returns:

bytes as string

toString

public java.lang.String toString(byte[] b,
                                 int ofs,
                                 int len)

Converts a given byte array to a string representation

Parameters:

b - the bytes

ofs - the offset

len - the length of the bytes

Returns:

bytes as string

splitAsList

public java.util.List<java.lang.String> splitAsList(java.lang.String expression,
                                                    java.lang.String splitString)

Split a string into a list

Parameters:

expression - the expression to split

splitString - the split string

Returns:

the string list or null

splitAsArray

public java.lang.String[] splitAsArray(java.lang.String expression,
                                       java.lang.String splitString)

Split a string into an array

Parameters:

expression - the expression to split

splitString - the split string

Returns:

the array or null

changeFirstLetterToUpperCase

public java.lang.String changeFirstLetterToUpperCase(java.lang.String name)

Changes the first letter of the given String to an upper case letter.

Parameters:

name - A name.

Returns:

The first letter of the given String to an upper case letter.

changeFirstLetterToLowerCase

public java.lang.String changeFirstLetterToLowerCase(java.lang.String name)

Changes the first letter of the given String to a lower case letter.

Parameters:

name - A name.

Returns:

The first letter of the given String to a lower case letter.

toCamelCase

public java.lang.String toCamelCase(java.lang.String data,
                                    boolean startWithLowerCase)

Convert a given string to CamelCase formated string (lower/upper or pascal case). Example:

input: This is an example output: ThisIsAnExample

Parameters:

data - the string to format

startWithLowerCase - true to start with lower case (lower camel case); otherwise false (upper camel or pascal case)

Returns:

the formated string

fromCamelCaseToSnakeCase

public java.lang.String fromCamelCaseToSnakeCase(java.lang.String data,
                                                 boolean toLowerCase)

Convert a given string from CamelCase notation to upper case formated string. Example: input: ThisIsAnExample output: THIS_IS_AN_EXAMPLE

Parameters:

data - the string to format

toLowerCase - true to lower snake case; otherwise to upper snake case

Returns:

the formated string

toSnakeCase

public java.lang.String toSnakeCase(java.lang.String data)

Convert a given string to SnakeCase formated string. Example: input: This is an example output: This_is_an_example

Parameters:

data - the string to format

Returns:

the formated string