| java.lang.Object
 com.Ostermiller.util.StringHelper
| StringHelper | | public class StringHelper (Code) | | Utilities for String formatting, manipulation, and queries.
More information about this class is available from ostermiller.org.
author:
Stephen Ostermiller http://ostermiller.org/contact.pl?regarding=Java+Utilities
since:
ostermillerutils 1.00.00 |
| Method Summary | |
| public static boolean | containsAny(String s, String[] terms)
Tests to see if the given string contains any of the given terms.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. | | public static boolean | containsAnyIgnoreCase(String s, String[] terms)
Tests to see if the given string contains any of the given terms.
Case is ignored when matching using Unicode case rules.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. | | public static boolean | endsWithAny(String s, String[] terms)
Tests to see if the given string ends with any of the given terms.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. | | public static boolean | endsWithAnyIgnoreCase(String s, String[] terms)
Tests to see if the given string ends with any of the given terms.
Case is ignored when matching using Unicode case rules.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. | | public static boolean | equalsAny(String s, String[] terms)
Tests to see if the given string equals any of the given terms.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. | | public static boolean | equalsAnyIgnoreCase(String s, String[] terms)
Tests to see if the given string equals any of the given terms.
Case is ignored when matching using Unicode case rules.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. | | public static String | escapeHTML(String s)
Replaces characters that may be confused by a HTML
parser with their equivalent character entity references.
Any data that will appear as text on a web page should
be be escaped. | | public static String | escapeJavaLiteral(String s)
Replaces characters that are not allowed in a Java style
string literal with their escape characters. | | public static String | escapeRegularExpressionLiteral(String s)
| | public static String | escapeSQL(String s)
Replaces characters that may be confused by an SQL
parser with their equivalent escape characters.
Any data that will be put in an SQL query should
be be escaped. | | public static Pattern | getContainsAnyIgnoreCasePattern(String[] terms)
Compile a pattern that can will match a string if the string
contains any of the given terms.
Case is ignored when matching using Unicode case rules.
Usage:
boolean b = getContainsAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. | | public static Pattern | getContainsAnyPattern(String[] terms)
Compile a pattern that can will match a string if the string
contains any of the given terms.
Usage:
boolean b = getContainsAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. | | public static Pattern | getEndsWithAnyIgnoreCasePattern(String[] terms)
Compile a pattern that can will match a string if the string
ends with any of the given terms.
Case is ignored when matching using Unicode case rules.
Usage:
boolean b = getEndsWithAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. | | public static Pattern | getEndsWithAnyPattern(String[] terms)
Compile a pattern that can will match a string if the string
ends with any of the given terms.
Usage:
boolean b = getEndsWithAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. | | public static Pattern | getEqualsAnyIgnoreCasePattern(String[] terms)
Compile a pattern that can will match a string if the string
equals any of the given terms.
Case is ignored when matching using Unicode case rules.
Usage:
boolean b = getEqualsAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. | | public static Pattern | getEqualsAnyPattern(String[] terms)
Compile a pattern that can will match a string if the string
equals any of the given terms.
Usage:
boolean b = getEqualsAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. | | public static Pattern | getStartsWithAnyIgnoreCasePattern(String[] terms)
Compile a pattern that can will match a string if the string
starts with any of the given terms.
Case is ignored when matching using Unicode case rules.
Usage:
boolean b = getStartsWithAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. | | public static Pattern | getStartsWithAnyPattern(String[] terms)
Compile a pattern that can will match a string if the string
starts with any of the given terms.
Usage:
boolean b = getStartsWithAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. | | public static String | join(String[] array)
Join all the elements of a string array into a single
String.
If the given array empty an empty string
will be returned. | | public static String | join(String[] array, String delimiter)
Join all the elements of a string array into a single
String.
If the given array empty an empty string
will be returned. | | public static String | midpad(String s, int length)
Pad the beginning and end of the given String with spaces until
the String is of the given length. | | public static String | midpad(String s, int length, char c)
Pad the beginning and end of the given String with the given character
until the result is the desired length. | | public static String | postpad(String s, int length)
Pad the end of the given String with spaces until
the String is of the given length.
If a String is longer than the desired length,
it will not be truncated, however no padding
will be added.
Parameters:
s - String to be padded.
Parameters:
length - desired length of result. | | public static String | postpad(String s, int length, char c)
Append the given character to the String until
the result is the desired length.
If a String is longer than the desired length,
it will not be truncated, however no padding
will be added.
Parameters:
s - String to be padded.
Parameters:
length - desired length of result.
Parameters:
c - padding character. | | public static String | prepad(String s, int length)
Pad the beginning of the given String with spaces until
the String is of the given length.
If a String is longer than the desired length,
it will not be truncated, however no padding
will be added.
Parameters:
s - String to be padded.
Parameters:
length - desired length of result. | | public static String | prepad(String s, int length, char c)
Pre-pend the given character to the String until
the result is the desired length.
If a String is longer than the desired length,
it will not be truncated, however no padding
will be added.
Parameters:
s - String to be padded.
Parameters:
length - desired length of result.
Parameters:
c - padding character. | | public static String | replace(String s, String find, String replace)
Replace occurrences of a substring.
StringHelper.replace("1-2-3", "-", "|");
result: "1|2|3"
StringHelper.replace("-1--2-", "-", "|");
result: "|1||2|"
StringHelper.replace("123", "", "|");
result: "123"
StringHelper.replace("1-2---3----4", "--", "|");
result: "1-2|-3||4"
StringHelper.replace("1-2---3----4", "--", "---");
result: "1-2----3------4"
Parameters:
s - String to be modified.
Parameters:
find - String to find.
Parameters:
replace - String to replace. | | public static String[] | split(String s, String delimiter)
Split the given String into tokens.
This method is meant to be similar to the split
function in other programming languages but it does
not use regular expressions. | | public static String[] | splitIncludeDelimiters(String s, String delimiter)
Split the given String into tokens. | | public static boolean | startsWithAny(String s, String[] terms)
Tests to see if the given string starts with any of the given terms.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. | | public static boolean | startsWithAnyIgnoreCase(String s, String[] terms)
Tests to see if the given string starts with any of the given terms.
Case is ignored when matching using Unicode case rules.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. | | public static String | trim(String s, String c)
Trim any of the characters contained in the second
string from the beginning and end of the first.
Parameters:
s - String to be trimmed.
Parameters:
c - list of characters to trim from s. | | public static String | unescapeHTML(String s)
Turn any HTML escape entities in the string into
characters and return the resulting string.
Parameters:
s - String to be un-escaped. |
| containsAny | | public static boolean containsAny(String s, String[] terms)(Code) | | Tests to see if the given string contains any of the given terms.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. It instead compiles
a single regular expression that can test all the terms at once, and
uses that expression against the string.
This is a convenience method. If multiple strings are tested against
the same set of terms, it is more efficient not to compile the regular
expression multiple times.
See Also: StringHelper.getContainsAnyPattern(String[])
Parameters:
s - String that may contain any of the given terms.
Parameters:
terms - list of substrings that may be contained in the given string. true iff one of the terms is a substring of the given string.
since:
ostermillerutils 1.02.25 |
| containsAnyIgnoreCase | | public static boolean containsAnyIgnoreCase(String s, String[] terms)(Code) | | Tests to see if the given string contains any of the given terms.
Case is ignored when matching using Unicode case rules.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. It instead compiles
a single regular expression that can test all the terms at once, and
uses that expression against the string.
This is a convenience method. If multiple strings are tested against
the same set of terms, it is more efficient not to compile the regular
expression multiple times.
See Also: StringHelper.getContainsAnyIgnoreCasePattern(String[])
Parameters:
s - String that may contain any of the given terms.
Parameters:
terms - list of substrings that may be contained in the given string. true iff one of the terms is a substring of the given string.
since:
ostermillerutils 1.02.25 |
| endsWithAny | | public static boolean endsWithAny(String s, String[] terms)(Code) | | Tests to see if the given string ends with any of the given terms.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. It instead compiles
a single regular expression that can test all the terms at once, and
uses that expression against the string.
This is a convenience method. If multiple strings are tested against
the same set of terms, it is more efficient not to compile the regular
expression multiple times.
See Also: StringHelper.getEndsWithAnyPattern(String[])
Parameters:
s - String that may end with any of the given terms.
Parameters:
terms - list of strings that may end with the given string. true iff the given string ends with one of the given terms.
since:
ostermillerutils 1.02.25 |
| endsWithAnyIgnoreCase | | public static boolean endsWithAnyIgnoreCase(String s, String[] terms)(Code) | | Tests to see if the given string ends with any of the given terms.
Case is ignored when matching using Unicode case rules.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. It instead compiles
a single regular expression that can test all the terms at once, and
uses that expression against the string.
This is a convenience method. If multiple strings are tested against
the same set of terms, it is more efficient not to compile the regular
expression multiple times.
See Also: StringHelper.getEndsWithAnyIgnoreCasePattern(String[])
Parameters:
s - String that may end with any of the given terms.
Parameters:
terms - list of strings that may end with the given string. true iff the given string ends with one of the given terms.
since:
ostermillerutils 1.02.25 |
| equalsAny | | public static boolean equalsAny(String s, String[] terms)(Code) | | Tests to see if the given string equals any of the given terms.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. It instead compiles
a single regular expression that can test all the terms at once, and
uses that expression against the string.
This is a convenience method. If multiple strings are tested against
the same set of terms, it is more efficient not to compile the regular
expression multiple times.
See Also: StringHelper.getEqualsAnyPattern(String[])
Parameters:
s - String that may equal any of the given terms.
Parameters:
terms - list of strings that may equal the given string. true iff one of the terms is equal to the given string.
since:
ostermillerutils 1.02.25 |
| equalsAnyIgnoreCase | | public static boolean equalsAnyIgnoreCase(String s, String[] terms)(Code) | | Tests to see if the given string equals any of the given terms.
Case is ignored when matching using Unicode case rules.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. It instead compiles
a single regular expression that can test all the terms at once, and
uses that expression against the string.
This is a convenience method. If multiple strings are tested against
the same set of terms, it is more efficient not to compile the regular
expression multiple times.
See Also: StringHelper.getEqualsAnyIgnoreCasePattern(String[])
Parameters:
s - String that may equal any of the given terms.
Parameters:
terms - list of strings that may equal the given string. true iff one of the terms is equal to the given string.
since:
ostermillerutils 1.02.25 |
| escapeHTML | | public static String escapeHTML(String s)(Code) | | Replaces characters that may be confused by a HTML
parser with their equivalent character entity references.
Any data that will appear as text on a web page should
be be escaped. This is especially important for data
that comes from untrusted sources such as Internet users.
A common mistake in CGI programming is to ask a user for
data and then put that data on a web page. For example:
Server: What is your name?
User: <b>Joe<b>
Server: Hello Joe, Welcome
If the name is put on the page without checking that it doesn't
contain HTML code or without sanitizing that HTML code, the user
could reformat the page, insert scripts, and control the the
content on your web server.
This method will replace HTML characters such as > with their
HTML entity reference (>) so that the html parser will
be sure to interpret them as plain text rather than HTML or script.
This method should be used for both data to be displayed in text
in the html document, and data put in form elements. For example:
<html><body>This in not a <tag>
in HTML</body></html>
and
<form><input type="hidden" name="date" value="This data could
be "malicious""></form>
In the second example, the form data would be properly be resubmitted
to your CGI script in the URLEncoded format:
This data could be %22malicious%22
Parameters:
s - String to be escaped escaped String
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.00.00 |
| escapeJavaLiteral | | public static String escapeJavaLiteral(String s)(Code) | | Replaces characters that are not allowed in a Java style
string literal with their escape characters. Specifically
quote ("), single quote ('), new line (\n), carriage return (\r),
and backslash (\), and tab (\t) are escaped.
Parameters:
s - String to be escaped escaped String
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.00.00 |
| escapeRegularExpressionLiteral | | public static String escapeRegularExpressionLiteral(String s)(Code) | | Escapes characters that have special meaning to
regular expressions
Parameters:
s - String to be escaped escaped String
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.02.25 |
| escapeSQL | | public static String escapeSQL(String s)(Code) | | Replaces characters that may be confused by an SQL
parser with their equivalent escape characters.
Any data that will be put in an SQL query should
be be escaped. This is especially important for data
that comes from untrusted sources such as Internet users.
For example if you had the following SQL query:
"SELECT * FROM addresses WHERE name='" + name + "' AND private='N'"
Without this function a user could give " OR 1=1 OR ''='"
as their name causing the query to be:
"SELECT * FROM addresses WHERE name='' OR 1=1 OR ''='' AND private='N'"
which will give all addresses, including private ones.
Correct usage would be:
"SELECT * FROM addresses WHERE name='" + StringHelper.escapeSQL(name) + "' AND private='N'"
Another way to avoid this problem is to use a PreparedStatement
with appropriate place holders.
Parameters:
s - String to be escaped escaped String
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.00.00 |
| getContainsAnyIgnoreCasePattern | | public static Pattern getContainsAnyIgnoreCasePattern(String[] terms)(Code) | | Compile a pattern that can will match a string if the string
contains any of the given terms.
Case is ignored when matching using Unicode case rules.
Usage:
boolean b = getContainsAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. Compiled pattern that can be used to match a string to see if it contains any of the terms.
since:
ostermillerutils 1.02.25 |
| getContainsAnyPattern | | public static Pattern getContainsAnyPattern(String[] terms)(Code) | | Compile a pattern that can will match a string if the string
contains any of the given terms.
Usage:
boolean b = getContainsAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. Compiled pattern that can be used to match a string to see if it contains any of the terms.
since:
ostermillerutils 1.02.25 |
| getEndsWithAnyIgnoreCasePattern | | public static Pattern getEndsWithAnyIgnoreCasePattern(String[] terms)(Code) | | Compile a pattern that can will match a string if the string
ends with any of the given terms.
Case is ignored when matching using Unicode case rules.
Usage:
boolean b = getEndsWithAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. Compiled pattern that can be used to match a string to see if it ends with any of the terms.
since:
ostermillerutils 1.02.25 |
| getEndsWithAnyPattern | | public static Pattern getEndsWithAnyPattern(String[] terms)(Code) | | Compile a pattern that can will match a string if the string
ends with any of the given terms.
Usage:
boolean b = getEndsWithAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. Compiled pattern that can be used to match a string to see if it ends with any of the terms.
since:
ostermillerutils 1.02.25 |
| getEqualsAnyIgnoreCasePattern | | public static Pattern getEqualsAnyIgnoreCasePattern(String[] terms)(Code) | | Compile a pattern that can will match a string if the string
equals any of the given terms.
Case is ignored when matching using Unicode case rules.
Usage:
boolean b = getEqualsAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. Compiled pattern that can be used to match a string to see if it equals any of the terms.
since:
ostermillerutils 1.02.25 |
| getEqualsAnyPattern | | public static Pattern getEqualsAnyPattern(String[] terms)(Code) | | Compile a pattern that can will match a string if the string
equals any of the given terms.
Usage:
boolean b = getEqualsAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. Compiled pattern that can be used to match a string to see if it equals any of the terms.
since:
ostermillerutils 1.02.25 |
| getStartsWithAnyIgnoreCasePattern | | public static Pattern getStartsWithAnyIgnoreCasePattern(String[] terms)(Code) | | Compile a pattern that can will match a string if the string
starts with any of the given terms.
Case is ignored when matching using Unicode case rules.
Usage:
boolean b = getStartsWithAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. Compiled pattern that can be used to match a string to see if it starts with any of the terms.
since:
ostermillerutils 1.02.25 |
| getStartsWithAnyPattern | | public static Pattern getStartsWithAnyPattern(String[] terms)(Code) | | Compile a pattern that can will match a string if the string
starts with any of the given terms.
Usage:
boolean b = getStartsWithAnyPattern(terms).matcher(s).matches();
If multiple strings are matched against the same set of terms,
it is more efficient to reuse the pattern returned by this function.
Parameters:
terms - Array of search strings. Compiled pattern that can be used to match a string to see if it starts with any of the terms.
since:
ostermillerutils 1.02.25 |
| join | | public static String join(String[] array)(Code) | | Join all the elements of a string array into a single
String.
If the given array empty an empty string
will be returned. Null elements of the array are allowed
and will be treated like empty Strings.
Parameters:
array - Array to be joined into a string. Concatenation of all the elements of the given array.
throws:
NullPointerException - if array is null.
since:
ostermillerutils 1.05.00 |
| join | | public static String join(String[] array, String delimiter)(Code) | | Join all the elements of a string array into a single
String.
If the given array empty an empty string
will be returned. Null elements of the array are allowed
and will be treated like empty Strings.
Parameters:
array - Array to be joined into a string.
Parameters:
delimiter - String to place between array elements. Concatenation of all the elements of the given array with the the delimiter in between.
throws:
NullPointerException - if array or delimiter is null.
since:
ostermillerutils 1.05.00 |
| midpad | | public static String midpad(String s, int length)(Code) | | Pad the beginning and end of the given String with spaces until
the String is of the given length. The result is that the original
String is centered in the middle of the new string.
If the number of characters to pad is even, then the padding
will be split evenly between the beginning and end, otherwise,
the extra character will be added to the end.
If a String is longer than the desired length,
it will not be truncated, however no padding
will be added.
Parameters:
s - String to be padded.
Parameters:
length - desired length of result. padded String.
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.00.00 |
| midpad | | public static String midpad(String s, int length, char c)(Code) | | Pad the beginning and end of the given String with the given character
until the result is the desired length. The result is that the original
String is centered in the middle of the new string.
If the number of characters to pad is even, then the padding
will be split evenly between the beginning and end, otherwise,
the extra character will be added to the end.
If a String is longer than the desired length,
it will not be truncated, however no padding
will be added.
Parameters:
s - String to be padded.
Parameters:
length - desired length of result.
Parameters:
c - padding character. padded String.
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.00.00 |
| postpad | | public static String postpad(String s, int length)(Code) | | Pad the end of the given String with spaces until
the String is of the given length.
If a String is longer than the desired length,
it will not be truncated, however no padding
will be added.
Parameters:
s - String to be padded.
Parameters:
length - desired length of result. padded String.
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.00.00 |
| postpad | | public static String postpad(String s, int length, char c)(Code) | | Append the given character to the String until
the result is the desired length.
If a String is longer than the desired length,
it will not be truncated, however no padding
will be added.
Parameters:
s - String to be padded.
Parameters:
length - desired length of result.
Parameters:
c - padding character. padded String.
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.00.00 |
| prepad | | public static String prepad(String s, int length)(Code) | | Pad the beginning of the given String with spaces until
the String is of the given length.
If a String is longer than the desired length,
it will not be truncated, however no padding
will be added.
Parameters:
s - String to be padded.
Parameters:
length - desired length of result. padded String.
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.00.00 |
| prepad | | public static String prepad(String s, int length, char c)(Code) | | Pre-pend the given character to the String until
the result is the desired length.
If a String is longer than the desired length,
it will not be truncated, however no padding
will be added.
Parameters:
s - String to be padded.
Parameters:
length - desired length of result.
Parameters:
c - padding character. padded String.
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.00.00 |
| replace | | public static String replace(String s, String find, String replace)(Code) | | Replace occurrences of a substring.
StringHelper.replace("1-2-3", "-", "|");
result: "1|2|3"
StringHelper.replace("-1--2-", "-", "|");
result: "|1||2|"
StringHelper.replace("123", "", "|");
result: "123"
StringHelper.replace("1-2---3----4", "--", "|");
result: "1-2|-3||4"
StringHelper.replace("1-2---3----4", "--", "---");
result: "1-2----3------4"
Parameters:
s - String to be modified.
Parameters:
find - String to find.
Parameters:
replace - String to replace. a string with all the occurrences of the string to find replaced.
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.00.00 |
| split | | public static String[] split(String s, String delimiter)(Code) | | Split the given String into tokens.
This method is meant to be similar to the split
function in other programming languages but it does
not use regular expressions. Rather the String is
split on a single String literal.
Unlike java.util.StringTokenizer which accepts
multiple character tokens as delimiters, the delimiter
here is a single String literal.
Each null token is returned as an empty String.
Delimiters are never returned as tokens.
If there is no delimiter because it is either empty or
null, the only element in the result is the original String.
StringHelper.split("1-2-3", "-");
result: {"1","2","3"}
StringHelper.split("-1--2-", "-");
result: {"","1","","2",""}
StringHelper.split("123", "");
result: {"123"}
StringHelper.split("1-2---3----4", "--");
result: {"1-2","-3","","4"}
Parameters:
s - String to be split.
Parameters:
delimiter - String literal on which to split. an array of tokens.
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.00.00 |
| splitIncludeDelimiters | | public static String[] splitIncludeDelimiters(String s, String delimiter)(Code) | | Split the given String into tokens. Delimiters will
be returned as tokens.
This method is meant to be similar to the split
function in other programming languages but it does
not use regular expressions. Rather the String is
split on a single String literal.
Unlike java.util.StringTokenizer which accepts
multiple character tokens as delimiters, the delimiter
here is a single String literal.
Each null token is returned as an empty String.
Delimiters are never returned as tokens.
If there is no delimiter because it is either empty or
null, the only element in the result is the original String.
StringHelper.split("1-2-3", "-");
result: {"1","-","2","-","3"}
StringHelper.split("-1--2-", "-");
result: {"","-","1","-","","-","2","-",""}
StringHelper.split("123", "");
result: {"123"}
StringHelper.split("1-2--3---4----5", "--");
result: {"1-2","--","3","--","-4","--","","--","5"}
Parameters:
s - String to be split.
Parameters:
delimiter - String literal on which to split. an array of tokens.
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.05.00 |
| startsWithAny | | public static boolean startsWithAny(String s, String[] terms)(Code) | | Tests to see if the given string starts with any of the given terms.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. It instead compiles
a single regular expression that can test all the terms at once, and
uses that expression against the string.
This is a convenience method. If multiple strings are tested against
the same set of terms, it is more efficient not to compile the regular
expression multiple times.
See Also: StringHelper.getStartsWithAnyPattern(String[])
Parameters:
s - String that may start with any of the given terms.
Parameters:
terms - list of strings that may start with the given string. true iff the given string starts with one of the given terms.
since:
ostermillerutils 1.02.25 |
| startsWithAnyIgnoreCase | | public static boolean startsWithAnyIgnoreCase(String s, String[] terms)(Code) | | Tests to see if the given string starts with any of the given terms.
Case is ignored when matching using Unicode case rules.
This implementation is more efficient than the brute force approach
of testing the string against each of the terms. It instead compiles
a single regular expression that can test all the terms at once, and
uses that expression against the string.
This is a convenience method. If multiple strings are tested against
the same set of terms, it is more efficient not to compile the regular
expression multiple times.
See Also: StringHelper.getStartsWithAnyIgnoreCasePattern(String[])
Parameters:
s - String that may start with any of the given terms.
Parameters:
terms - list of strings that may start with the given string. true iff the given string starts with one of the given terms.
since:
ostermillerutils 1.02.25 |
| trim | | public static String trim(String s, String c)(Code) | | Trim any of the characters contained in the second
string from the beginning and end of the first.
Parameters:
s - String to be trimmed.
Parameters:
c - list of characters to trim from s. trimmed String.
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.00.00 |
| unescapeHTML | | public static String unescapeHTML(String s)(Code) | | Turn any HTML escape entities in the string into
characters and return the resulting string.
Parameters:
s - String to be un-escaped. un-escaped String.
throws:
NullPointerException - if s is null.
since:
ostermillerutils 1.00.00 |
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