Package com.sun.enterprise.util

Class StringUtils

  • public class StringUtils
extends Object

    • Field Detail

      • NEWLINE

        public static final String NEWLINE

      • EOL

        public static final String EOL

    • Method Detail

      • safeLength

        public static int safeLength​(String s)
        return the length of the String - or 0 if it's null
        Parameters:
        s -
        Returns:

      • ok

        public static boolean ok​(String s)
        Returns true if a string is not null and has a non-zero length, false otherwise
        Parameters:
        s -
        Returns:

      • formatSQLException

        public static String formatSQLException​(SQLException ex)
        Returns a String containing SQLState, message and error code of exception and all sub-exceptions
        Parameters:
        ex - the exception to format

      • maxWidth

        public static int maxWidth​(List strings)
        Find longest String in a List of Strings...
        Parameters:
        strings - the list of strings

      • isHex

        public static boolean isHex​(String s)
        Is this the String representation of a valid hex number? "5", "d", "D", "F454ecbb" all return true..
        Parameters:
        s - .

      • isHex

        public static boolean isHex​(char c)
        Is this the char a valid hex digit?

        Can be upper or lower case

        Parameters:
        c -
        Returns:

      • getPenultimateDirName

        public static String getPenultimateDirName​(String s)
        e.g. input: "a/b/c/d/foobar.txt" output: "d"
        Parameters:
        s -
        Returns:

      • toShortClassName

        public static String toShortClassName​(String className)
        Returns the classname without package info

        i.e. java.lang.String would return String

        Parameters:
        className - The classname to convert. Note that there is no checking that this is a valid classname.
        Returns:

      • padRight

        public static String padRight​(String s,
                              int len)
        Adds spaces to the end of a string to make it reach the specified length.

        If the string is longer than the padded length then this function will return the original string.

        Parameters:
        s - String to pad
        len - The length of the string with added padding
        Returns:
        The padded string

      • padLeft

        public static String padLeft​(String s,
                             int len)
        Adds spaces to the front of a string to make it reach the specified length.

        If the string is longer than the padded length then this function will return the original string.

        Parameters:
        s - String to pad
        len - The length of the string with added padding
        Returns:
        The padded string

      • toLines

        public static String[] toLines​(String s)
        Converts a String into an array where every \n is a new used to signal a new element in the array
        Parameters:
        s - string to split into lines

      • prepend

        public static void prepend​(String[] ss,
                           String what)
        Puts a string before every element in an array

        i.e. prepend(new String["foo", "bar"],"not ") would result in String["not foo", "not bar"]

        Parameters:
        ss -
        what -

      • upperCaseFirstLetter

        public static String upperCaseFirstLetter​(String s)
        Converts the first letter of a string to upper case
        Parameters:
        s -
        Returns:

      • toString

        public static String toString​(Properties props)
        Converts a Properties object to string

        If there it is empty then this will return "No entries". Otherwise it will be in the form of "key= value" with each property on a new line.

        Parameters:
        props -
        Returns:

      • main

        public static void main​(String[] args)

      • testUpperCase

        public static void testUpperCase()

      • makeFilePath

        public static String makeFilePath​(String[] strings,
                                  boolean addTrailing)
        A utility to get the Operating System specific path from given array of Strings.
        Parameters:
        strings - an array of Strings participating in the path.
        addTrailing - a boolean that determines whether the returned String should have a trailing File Separator character. None of the strings may be null or empty String. An exception is thrown.
        Returns:
        a String that concatenates these Strings and gets a path. Returns a null if the array is null or contains no elements.
        Throws:
        IllegalArgumentException - if any of the arguments is null or is an empty string.

      • parseStringList

        public static List<String> parseStringList​(String line)
        Parses a string containing substrings separated from each other by the standard separator characters and returns a list of strings. Splits the string line into individual string elements separated by the field separators, and returns these individual strings as a list of strings. The individual string elements are trimmed of leading and trailing whitespace. Only non-empty strings are returned in the list.
        Parameters:
        line - The string to split
        Returns:
        Returns the list containing the individual strings that the input string was split into.

      • parseStringList

        public static List<String> parseStringList​(String line,
                                           String sep)
        Parses a string containing substrings separated from each other by the specified set of separator characters and returns a list of strings. Splits the string line into individual string elements separated by the field separators specified in sep, and returns these individual strings as a list of strings. The individual string elements are trimmed of leading and trailing whitespace. Only non-empty strings are returned in the list.
        Parameters:
        line - The string to split
        sep - The list of separators to use for determining where the string should be split. If null, then the standard separators (see StringTokenizer javadocs) are used.
        Returns:
        Returns the list containing the individual strings that the input string was split into.

      • getProperty

        public static String getProperty​(String propName)
        Get a system propety given a property name, possibly trying all combination of upercase, name mangling to get a value.
        Parameters:
        propName - the approximate system property name
        Returns:
        the property value if found, null otherwise

      • removeChar

        public static String removeChar​(String strOrig,
                                char c)
        Remove a character from a String
        Parameters:
        strOrig - original string
        c - character to remove from the string
        Returns:
        String with specified characters removed

      • getStackTrace

        public static String getStackTrace​(Throwable t)
        Gets a String version of the stack trace of an exception
        Parameters:
        t -
        Returns:

      • isToken

        public static final boolean isToken​(String s)
        Returns true is the given string is of the form "${text}"
        Parameters:
        s -
        Returns:

      • stripToken

        public static final String stripToken​(String s)
        Removes preceding ${ and trailing } from a String
        Parameters:
        s -
        Returns:

      • cat

        public static String cat​(String separator,
                         String... list)
        Concatenate a list of strings, putting a separator in between each one. If the list is one string, then the separator is not used. The separator will never be added to the start or end of the returned string. When empty or null strings are encountered in the list of strings they are ignore.
        Parameters:
        separator - Separator to use between concatenated strings
        list - List of strings to concatenate together
        Returns:
        String created by concatenating provided strings

      • removeEnclosingQuotes

        public static String removeEnclosingQuotes​(String s)
        Removes the quoting around a String.
        Parameters:
        s - The String that may have enclosing quotes
        Returns:
        The String resulting from removing the enclosing quotes

      • quotePathIfNecessary

        public static String quotePathIfNecessary​(String path)
        Nightmares can result from using a path with a space in it! This method will enclose in double-quotes if needed.
        Parameters:
        path -
        Returns:

      • quotePathIfNecessary

        public static String quotePathIfNecessary​(String path,
                                          char quoteChar)
        Nightmares can result from using a path with a space in it! This method will enclose in the specified quote characters if needed.
        Parameters:
        path -
        quoteChar -
        Returns:

      • escapeForHtml

        public static String escapeForHtml​(String str)
        Escape characters to use result in html.
        Chars Escape sequence
        < <
        > >
        & &
        " "
        \t
        Parameters:
        str -
        Returns:

      • nvl

        public static String nvl​(String str)
        If given String is null then returns empty String otherwise returns given String
        Parameters:
        str -
        Returns:

      • trimQuotes

        public static String trimQuotes​(String value)