Package ai.libs.jaicore.basic

Class StringUtil

  • public class StringUtil
extends java.lang.Object
    This class provides handy utility functions when dealing with Strings.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static java.lang.String[] explode​(java.lang.String string, java.lang.String delimiter)
      Splits a string using delimiter as a separator of elements into an array.
      static java.lang.String firstElementWithPrefix​(java.util.Collection<java.lang.String> collection, java.lang.String prefix)
      Finds the first String starting with the given prefix in a collection of Strings.
      static java.lang.String fromBinary​(java.lang.String binarySequence)
      Translates a binary representation of a string to the respective string.
      static java.lang.String[] getArrayWithValues​(int size, java.lang.String value)  
      static char[] getCommonChars​(boolean includeDigits)
      Getter for all available common characters of the system.
      static java.lang.String getRandomString​(int length, char[] chars, long seed)
      Returns a random string of a desired length and from a given set of characters.
      static java.lang.String implode​(java.lang.Object[] array)
      Concatenates the string representations of an array of objects using ", " as a separator.
      static java.lang.String implode​(java.lang.Object[] array, java.lang.String delimiter)
      Concatenates the string representations of an array of objects using the specified delimiter as a separator.
      static java.lang.String implode​(java.util.Collection<?> set, java.lang.String delimiter)
      Concatenates the string representations of a set of objects using the specified delimiter as a separator.
      static java.lang.String implode​(java.util.Collection<java.lang.Object> collection)
      Concatenates the string representations of a collection of objects using ", " as a separator.
      static java.lang.String implode​(java.util.Set<java.lang.Object> set)
      Concatenates the string representations of a set of objects using ", " as a separator.
      static java.lang.String[] merge​(java.lang.String[] array1, java.lang.String[] array2)
      Merges two string arrays into one single array.
      static java.lang.String[] shiftFirst​(java.lang.String[] input)
      Removes the first entry of the value and returns an array containing all values but the first one.
      static java.lang.String stripChar​(java.lang.String str, char c)
      Strips a specific character from a string.
      static java.lang.String toStringLimited​(java.lang.Object o, int limit)
      Limits the toString output of an object to a specified length.

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • getCommonChars

        public static char[] getCommonChars​(boolean includeDigits)
        Getter for all available common characters of the system. Digits can be included if desired.
        Parameters:
        includeDigits - Flag whether to include digits in the array of the system's common characters.
        Returns:
        An array of the system's common characters.

      • getRandomString

        public static java.lang.String getRandomString​(int length,
                                               char[] chars,
                                               long seed)
        Returns a random string of a desired length and from a given set of characters.
        Parameters:
        length - The length of the resulting random string.
        chars - The set of characters to be used to generate a random string.
        Returns:
        The generated random string.

      • implode

        public static java.lang.String implode​(java.lang.Object[] array)
        Concatenates the string representations of an array of objects using ", " as a separator.
        Parameters:
        array - The array of objects of which the string representation is to be concatenated.
        Returns:
        The concatenated string of the given objects' string representation.

      • implode

        public static java.lang.String implode​(java.util.Set<java.lang.Object> set)
        Concatenates the string representations of a set of objects using ", " as a separator.
        Parameters:
        set - The set of objects of which the string representation is to be concatenated.
        Returns:
        The concatenated string of the given objects' string representation.

      • implode

        public static java.lang.String implode​(java.util.Collection<?> set,
                                       java.lang.String delimiter)
        Concatenates the string representations of a set of objects using the specified delimiter as a separator.
        Parameters:
        set - The set of objects of which the string representation is to be concatenated.
        delimter - A string separating the respective string representations.
        Returns:
        The concatenated string of the given objects' string representation.

      • implode

        public static java.lang.String implode​(java.util.Collection<java.lang.Object> collection)
        Concatenates the string representations of a collection of objects using ", " as a separator.
        Parameters:
        collection - The set of objects of which the string representation is to be concatenated.
        Returns:
        The concatenated string of the given objects' string representation.

      • implode

        public static java.lang.String implode​(java.lang.Object[] array,
                                       java.lang.String delimiter)
        Concatenates the string representations of an array of objects using the specified delimiter as a separator.
        Parameters:
        array - The array of objects of which the string representation is to be concatenated.
        delimter - A string separating the respective string representations.
        Returns:
        The concatenated string of the given objects' string representation.

      • explode

        public static java.lang.String[] explode​(java.lang.String string,
                                         java.lang.String delimiter)
        Splits a string using delimiter as a separator of elements into an array.
        Parameters:
        string - The string to be split.
        delimiter - A string separating the sub-strings.
        Returns:
        An array of sub-string which were formerly separeted by the specified delimiter.

      • merge

        public static java.lang.String[] merge​(java.lang.String[] array1,
                                       java.lang.String[] array2)
        Merges two string arrays into one single array. Note: This is a duplicate for apache-commons-lang: ArrayUtils.addAll(array1, array2);
        Parameters:
        array1 - The first array.
        array2 - The second array.
        Returns:
        Concatenated array of Strings.

      • getArrayWithValues

        public static java.lang.String[] getArrayWithValues​(int size,
                                                    java.lang.String value)

      • stripChar

        public static java.lang.String stripChar​(java.lang.String str,
                                         char c)
        Strips a specific character from a string.
        Parameters:
        str - The string from which the character shall be stripped.
        c - The character to strip.
        Returns:
        The stripped string where the specified character does not occur any longer.

      • shiftFirst

        public static java.lang.String[] shiftFirst​(java.lang.String[] input)
        Removes the first entry of the value and returns an array containing all values but the first one.
        Parameters:
        input - The array of values to be shifted.
        Returns:
        The resulting shifted array.

      • fromBinary

        public static java.lang.String fromBinary​(java.lang.String binarySequence)
        Translates a binary representation of a string to the respective string.
        Parameters:
        binarySequence - The binary encoding of the string.
        Returns:
        The translated string.

      • toStringLimited

        public static java.lang.String toStringLimited​(java.lang.Object o,
                                               int limit)
        Limits the toString output of an object to a specified length.
        Parameters:
        o - The object for which a string limited string representation is to be obtained.
        limit - The maximum length of the toString output.
        Returns:
        The resulting (potentially cut) string.

      • firstElementWithPrefix

        public static java.lang.String firstElementWithPrefix​(java.util.Collection<java.lang.String> collection,
                                                      java.lang.String prefix)
        Finds the first String starting with the given prefix in a collection of Strings.
        Parameters:
        collection - The collection of Strings to search in.
        prefix - The prefix of the searched-for element.
        Returns:
        The first element of the collection starting with the desired prefix.