bradleyross.library.helpers

Class StringHelpers

java.lang.Object

bradleyross.library.helpers.StringHelpers

public class StringHelpers
extends Object

Classes for manipulating strings.

Author:

Bradley Ross

Constructor Summary

Constructors

Constructor and Description
StringHelpers()

Method Summary

Methods

Modifier and Type	Method and Description
static String	doubleEscapeHTML(ResultSet rs, String parameterName, String modeValue) Carry out the HTML escaping of a string twice.
static String	doubleEscapeHTML(String value) Carry out the HTML escaping of a string twice.
static String	doubleEscapeHTML(String value, String modeValue) Carry out the HTML escaping of a string twice.
static String	escapeHTML(ResultSet rs, String parameterName) Processes special characters in HTML code so that it will not be interpreted by browser as commands.
static String	escapeHTML(ResultSet rs, String parameterName, String mode) Processes special characters in HTML code so that it will not be interpreted by browser as commands.
static String	escapeHTML(String value) Replace less than signs, greater than signs, and ampersands in a string with their HTML representations.
static String	escapeHTML(String value, String modeValue) Replace less than signs, greater than signs, and ampersands in a string with their HTML representations.
static boolean	isAlphanumericOnly(String value) Returns true if and only if all of the characters in the string are alphanumeric.
static boolean	isDigitsOnly(String value) Returns true if the string is only composed of numeric digits.
static void	main(String[] args) Test driver.
static String	padLeft(String value, int size) Pads a string with blanks to the left so that it has a specified size.
static String	padRight(String value, int size) Pads a string with blanks to the right so that it has a specified size.
static void	printJustified(GenericPrinter output, String value)
protected static void	printJustified(GenericPrinter output, String value, int length) Send a string to an output device, inserting line breaks at the first space after a specified number of characters on the line.
static void	printJustified(PrintStream output, String value)
static void	printJustified(PrintStream output, String value, int length)
static void	printJustified(PrintWriter output, String value)
static void	printJustified(PrintWriter output, String value, int length)
static void	printJustified(String value)
static void	printJustified(String value, int length)

Methods inherited from class java.lang.Object

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

Constructor Detail

StringHelpers

public StringHelpers()

Method Detail

padRight

public static String padRight(String value,
              int size)

Pads a string with blanks to the right so that it has a specified size.

Parameters:

value - String to be padded

size - Desired size of padded string

Returns:

Padded string

padLeft

public static String padLeft(String value,
             int size)

Pads a string with blanks to the left so that it has a specified size.

Parameters:

value - String to be padded

size - Desired size of padded string

Returns:

Padded string

isDigitsOnly

public static boolean isDigitsOnly(String value)

Returns true if the string is only composed of numeric digits.

Parameters:

value - String to be evaluated

Returns:

True if string only has numeric digits as characters.

isAlphanumericOnly

public static boolean isAlphanumericOnly(String value)

Returns true if and only if all of the characters in the string are alphanumeric.

Parameters:

value - String to be evaluated

Returns:

True if string has only alphanumeric characters

printJustified

public static void printJustified(String value)

printJustified

public static void printJustified(String value,
                  int length)

printJustified

public static void printJustified(PrintStream output,
                  String value)

printJustified

public static void printJustified(PrintWriter output,
                  String value)

printJustified

public static void printJustified(GenericPrinter output,
                  String value)

printJustified

public static void printJustified(PrintStream output,
                  String value,
                  int length)

printJustified

public static void printJustified(PrintWriter output,
                  String value,
                  int length)

printJustified

protected static void printJustified(GenericPrinter output,
                  String value,
                  int length)

Send a string to an output device, inserting line breaks at the first space after a specified number of characters on the line.

Parameters:

output - Output device

value - String to be sent to output

length - Number of characters on a line after which the next space is to be replaced by a line feed.

escapeHTML

public static String escapeHTML(String value)

Replace less than signs, greater than signs, and ampersands in a string with their HTML representations.

Parameters:

value - String to be modified

Returns:

Modified string

doubleEscapeHTML

public static String doubleEscapeHTML(String value)

Carry out the HTML escaping of a string twice.

Parameters:

value - String to be escaped

Returns:

Escaped string

doubleEscapeHTML

public static String doubleEscapeHTML(String value,
                      String modeValue)

Carry out the HTML escaping of a string twice.

Parameters:

value - String to be escaped

modeValue - Mode of escaping

Returns:

Escaped string

doubleEscapeHTML

public static String doubleEscapeHTML(ResultSet rs,
                      String parameterName,
                      String modeValue)

Carry out the HTML escaping of a string twice.

Parameters:

rs - Result set containing value

parameterName - Name of column in result set

modeValue - Type of processing for escaping

Returns:

Escaped string

escapeHTML

public static String escapeHTML(String value,
                String modeValue)

Replace less than signs, greater than signs, and ampersands in a string with their HTML representations.

If mode is TEXTAREA or TEXT, do not replace line breaks. When escaping the contents of a TEXTAREA tag, the new line and carriage return characters should remain unchanged so that they are properly represented in the form.

Parameters:

value - String to be modified

modeValue - Mode of operation

Returns:

Modified string

escapeHTML

public static String escapeHTML(ResultSet rs,
                String parameterName,
                String mode)

Processes special characters in HTML code so that it will not be interpreted by browser as commands.

Uses @{link escapeHTML(String, String).

Parameters:

rs - Result set containing value.

parameterName - Name of column containing value

mode - Mode of processing to be used

Returns:

Escaped string

escapeHTML

public static String escapeHTML(ResultSet rs,
                String parameterName)

Processes special characters in HTML code so that it will not be interpreted by browser as commands.

Uses @{link escapeHTML(String).

Parameters:

rs - Result set containing value.

parameterName - Name of column containing value

Returns:

Escaped string

main

public static void main(String[] args)

Test driver.

Parameters:

args - Not used