String
A string is an immutable sequence of characters. See Strings for an overview of strings.
The following operations are supported for strings:
+ : (String, String) -> String
Concatenates two strings.
* : (String, Integer) -> String
Given a string and an integer n, repeats the string n times.
[] : (String, Integer) -> char
Given a string and an index, returns the character at the given index in the string.
~ : (String) -> Pattern
Creates a regular expression from a string. See Pattern in the Java standard library for more information.
=~ : (String, String) -> Matcher
Given a string and a pattern, creates a matcher that is truthy if the pattern occurs anywhere in the string. See Matcher in the Java standard library for more information.
==~ : (String, String) -> Boolean
Given a string and a pattern, returns true if the string matches the pattern exactly.
The following methods are available for a string:
contains( str: String ) -> Boolean
Returns true if the given substring occurs anywhere in the string.
endsWith( suffix: String ) -> Boolean
Returns true if the string ends with the given suffix.
execute() -> Process
Execute the string as a command. Returns a Process which provides the exit status and standard input/output/error of the executed command.
indexOf( str: String ) -> Integer
Returns the index within the string of the first occurrence of the given substring. Returns -1 if the string does not contain the substring.
indexOf( str: String, fromIndex: Integer ) -> Integer
Returns the index within the string of the first occurrence of the given substring, starting the search at the given index. Returns -1 if the string does not contain the substring.
isBlank() -> Boolean
Returns true if the string is empty or contains only whitespace characters.
isEmpty() -> Boolean
Returns true if the string is empty (i.e. length() is 0).
isDouble() -> Boolean
Returns true if the string can be parsed as a 64-bit (double precision) floating-point number.
isFloat() -> Boolean
Returns true if the string can be parsed as a 32-bit floating-point number.
isInteger() -> Boolean
Returns true if the string can be parsed as a 32-bit integer.
isLong() -> Boolean
Returns true if the string can be parsed as a 64-bit (long) integer.
lastIndexOf( str: String ) -> Integer
Returns the index within the string of the last occurrence of the given substring. Returns -1 if the string does not contain the substring.
lastIndexOf( str: String, fromIndex: Integer ) -> Integer
Returns the index within the string of the last occurrence of the given substring, searching backwards starting at the given index. Returns -1 if the string does not contain the substring.
length() -> Integer
Returns the length of the string.
md5() -> String
Returns the MD5 checksum of the string.
readLines() -> List<String>
Returns the lines of the string as a list.
replace( target: String, replacement: String ) -> String
Returns a new string in which each occurrence of the target string is replaced with the given replacement string.
replaceAll( regex: String, replacement: String ) -> String
Returns a new string in which each occurrence of the given regular expression is replaced with the given replacement string.
replaceFirst( regex: String, replacement: String ) -> String
Returns a new string in which the first occurrence of the given regular expression is replaced with the given replacement string.
reverse() -> String
Returns a new string with the characters in reverse order.
sha256() -> String
Returns the SHA-256 checksum of the string.
startsWith( prefix: String ) -> Boolean
Returns true if the string ends with the given prefix.
strip() -> String
Returns a copy of the string with all leading and trailing whitespace removed.
stripIndent() -> String
Returns a copy of the string with leading spaces on each line removed. The number of spaces to remove is determined by the line with the least number of leading spaces, excluding lines with only whitespace.
stripLeading() -> String
Returns a copy of the string with all leading whitespace removed.
stripTrailing() -> String
Returns a copy of the string with all trailing whitespace removed.
substring( beginIndex: Integer ) -> String
Returns a substring of this string.
substring( beginIndex: Integer, endIndex: Integer ) -> String
Returns a substring of this string.
toBoolean() -> Boolean
Returns true if the trimmed string is "true", "y", or "1" (ignoring case).
toDouble() -> Float
Parses the string into a 64-bit (double precision) floating-point number.
toFloat() -> Float
Parses the string into a 32-bit floating-point number.
toInteger() -> Integer
Parses the string into a 32-bit integer.
toLong() -> Integer
Parses the string into a 64-bit (long) integer.
toLowerCase() -> String
Returns a copy of this string with all characters converted to lower case.
toUpperCase() -> String
Returns a copy of this string with all characters converted to upper case.
tokenize() -> List<String>
Splits the string into a list of substrings using whitespace as the delimiter.
tokenize( delimiters: String ) -> List<String>
Splits the string into a list of substrings using the given delimiters. Each character in the delimiter string is treated as a separate delimiter.