org.apache.commons.io

Enum IOCase

  • All Implemented Interfaces:
    Serializable, Comparable<IOCase>


    public enum IOCaseextends Enum<IOCase>implements Serializable
    Enumeration of IO case sensitivity.

    Different filing systems have different rules for case-sensitivity. Windows is case-insensitive, Unix is case-sensitive.

    This class captures that difference, providing an enumeration to control how filename comparisons should be performed. It also provides methods that use the enumeration to perform comparisons.

    Wherever possible, you should use the check methods in this class to compare filenames.

    Since:
    1.3
    Version:
    $Id: IOCase.java 1483915 2013-05-17 17:02:35Z sebb $
    • Enum Constant Detail

      • SENSITIVE

        public static final IOCase SENSITIVE
        The constant for case sensitive regardless of operating system.
      • INSENSITIVE

        public static final IOCase INSENSITIVE
        The constant for case insensitive regardless of operating system.
      • SYSTEM

        public static final IOCase SYSTEM
        The constant for case sensitivity determined by the current operating system. Windows is case-insensitive when comparing filenames, Unix is case-sensitive.

        Note: This only caters for Windows and Unix. Other operating systems (e.g. OSX and OpenVMS) are treated as case sensitive if they use the Unix file separator and case-insensitive if they use the Windows file separator (see File.separatorChar).

        If you derialize this constant of Windows, and deserialize on Unix, or vice versa, then the value of the case-sensitivity flag will change.

    • Method Detail

      • values

        public static IOCase[] values()
        Returns an array containing the constants of this enum type, inthe order they are declared. This method may be used to iterateover the constants as follows:
        for (IOCase c : IOCase.values())    System.out.println(c);
        Returns:
        an array containing the constants of this enum type, in the order they are declared
      • valueOf

        public static IOCase valueOf(String name)
        Returns the enum constant of this type with the specified name.The string must match exactly an identifier used to declare anenum constant in this type. (Extraneous whitespace characters are not permitted.)
        Parameters:
        name - the name of the enum constant to be returned.
        Returns:
        the enum constant with the specified name
        Throws:
        IllegalArgumentException - if this enum type has no constant with the specified name
        NullPointerException - if the argument is null
      • forName

        public static IOCase forName(String name)
        Factory method to create an IOCase from a name.
        Parameters:
        name - the name to find
        Returns:
        the IOCase object
        Throws:
        IllegalArgumentException - if the name is invalid
      • getName

        public String getName()
        Gets the name of the constant.
        Returns:
        the name of the constant
      • isCaseSensitive

        public boolean isCaseSensitive()
        Does the object represent case sensitive comparison.
        Returns:
        true if case sensitive
      • checkCompareTo

        public int checkCompareTo(String str1,                 String str2)
        Compares two strings using the case-sensitivity rule.

        This method mimics String.compareTo(java.lang.String) but takes case-sensitivity into account.

        Parameters:
        str1 - the first string to compare, not null
        str2 - the second string to compare, not null
        Returns:
        true if equal using the case rules
        Throws:
        NullPointerException - if either string is null
      • checkEquals

        public boolean checkEquals(String str1,                  String str2)
        Compares two strings using the case-sensitivity rule.

        This method mimics String.equals(java.lang.Object) but takes case-sensitivity into account.

        Parameters:
        str1 - the first string to compare, not null
        str2 - the second string to compare, not null
        Returns:
        true if equal using the case rules
        Throws:
        NullPointerException - if either string is null
      • checkStartsWith

        public boolean checkStartsWith(String str,                      String start)
        Checks if one string starts with another using the case-sensitivity rule.

        This method mimics String.startsWith(String) but takes case-sensitivity into account.

        Parameters:
        str - the string to check, not null
        start - the start to compare against, not null
        Returns:
        true if equal using the case rules
        Throws:
        NullPointerException - if either string is null
      • checkEndsWith

        public boolean checkEndsWith(String str,                    String end)
        Checks if one string ends with another using the case-sensitivity rule.

        This method mimics String.endsWith(java.lang.String) but takes case-sensitivity into account.

        Parameters:
        str - the string to check, not null
        end - the end to compare against, not null
        Returns:
        true if equal using the case rules
        Throws:
        NullPointerException - if either string is null
      • checkIndexOf

        public int checkIndexOf(String str,               int strStartIndex,               String search)
        Checks if one string contains another starting at a specific index using the case-sensitivity rule.

        This method mimics parts of String.indexOf(String, int) but takes case-sensitivity into account.

        Parameters:
        str - the string to check, not null
        strStartIndex - the index to start at in str
        search - the start to search for, not null
        Returns:
        the first index of the search String, -1 if no match or null string input
        Throws:
        NullPointerException - if either string is null
        Since:
        2.0
      • checkRegionMatches

        public boolean checkRegionMatches(String str,                         int strStartIndex,                         String search)
        Checks if one string contains another at a specific index using the case-sensitivity rule.

        This method mimics parts of String.regionMatches(boolean, int, String, int, int) but takes case-sensitivity into account.

        Parameters:
        str - the string to check, not null
        strStartIndex - the index to start at in str
        search - the start to search for, not null
        Returns:
        true if equal using the case rules
        Throws:
        NullPointerException - if either string is null
      • toString

        public String toString()
        Gets a string describing the sensitivity.
        Overrides:
        toString in class Enum<IOCase>
        Returns:
        a string describing the sensitivity

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