Package net.sf.saxon.regex.charclass

## Class SingletonCharacterClass

- java.lang.Object
- - net.sf.saxon.regex.charclass.SingletonCharacterClass

- All Implemented Interfaces:
    `java.util.function.IntPredicate`, `CharacterClass`

      public class SingletonCharacterClass
      extends java.lang.Object
      implements CharacterClass

  A character class represents a set of characters for regex matching purposes. A singleton character class matches exactly one character

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `SingletonCharacterClass​(int codepoint)` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `int` | `getCodepoint()` |
    `IntSet` | `getIntSet()` | Get the set of matching characters if available.
    `boolean` | `isDisjoint​(CharacterClass other)` | Ask whether this character class is known to be disjoint with another character class (that is, the two classes have no characters in common).
    `boolean` | `test​(int value)` |

    - ### Methods inherited from class java.lang.Object

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

    - ### Methods inherited from interface java.util.function.IntPredicate

      `and, negate, or`

- - ### Constructor Detail

    - #### SingletonCharacterClass

          public SingletonCharacterClass​(int codepoint)

  - ### Method Detail

    - #### test

          public boolean test​(int value)

      Specified by:
        `test` in interface `java.util.function.IntPredicate`

    - #### isDisjoint

          public boolean isDisjoint​(CharacterClass other)

      Description copied from interface: `CharacterClass`
      Ask whether this character class is known to be disjoint with another character class (that is, the two classes have no characters in common). If in doubt, return false.
      Specified by:
        `isDisjoint` in interface `CharacterClass`
      Parameters:
        `other` - the other character class
      Returns:
        true if the character classes are known to be disjoint; false if there may be characters in common between the two classes

    - #### getCodepoint

          public int getCodepoint()

    - #### getIntSet

          public IntSet getIntSet()

      Description copied from interface: `CharacterClass`
      Get the set of matching characters if available. If not available, return null
      Specified by:
        `getIntSet` in interface `CharacterClass`