Commons tool set -- stringutils

Stringutils provides the following features and Methods. All methods are null secure and thread secure:

• Isempty/isblank-Checks if a string contains text

Blank detection. Empty refers to a blank string, that is, the length is 0; Blank refers to a blank string, the length is not necessarily set to 0, may contain blank characters or tabs.

 StringUtils.isEmpty(null)      = true StringUtils.isEmpty("")        = true StringUtils.isEmpty(" ")       = false StringUtils.isEmpty("bob")     = false StringUtils.isEmpty("  bob  ") = false

 StringUtils.isBlank(null)      = true StringUtils.isBlank("")        = true StringUtils.isBlank(" ")       = true StringUtils.isBlank("bob")     = false StringUtils.isBlank("  bob  ") = false

• Trim/Strip-Removes leading and trailing whitespace
• Equals-Compares two strings null-safe
• Startswith-Check if a string starts with a prefix null-safe
• Endswith-Check if a string ends with a suffix null-safe
• Indexof/lastindexof/contains-Null-safe index-of checks
• Indexofany/lastindexofany/indexofanybut/lastindexofanybut-Index-of any of a set of strings
• Containsonly/containsnone/containsany-Does string contains only/NONE/any of these characters
• Substring/left/right/Mid-Null-safe substring extractions
• Substringbefore/substringafter/substringbetween-Substring extraction relative to other strings
• Split/join-Splits a string into an array of substrings and vice versa
• Remove/delete-Removes part of a string
• Replace/overlay-Searches a string and replaces one string with another
• Chomp/chop-Removes the last part of a string
• Leftpad/rightpad/center/repeat-Pads a string
• Uppercase/lowercase/swapcase/capitalize/uncapitalize-Changes the case of a string
• Countmatches-Counts the number of occurrences of one string in another
• Isalpha/isnumeric/iswhitespace/isasciiprintable-Checks the characters in a string
• Defaultstring-Protects against a null input string
• Reverse/reversedelimited-Reverses a string
• Abbreviate-Abbreviates a string using ellipsis
• Difference-Compares strings and reports on their differences
• Levenshteindistance-The number of changes needed to change one string into another

Word Meaning:

• Null-null
• Empty-A zero-length string ("")
• Space-The space character (' ', Char 32)
• Whitespace-The characters definedCharacter.isWhitespace(char)
• Trim-The characters <= 32 as inString.trim()