EmptyCharacterClass

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

All Implemented Interfaces:

java.util.function.IntPredicate, CharacterClass
```
public class EmptyCharacterClass
extends java.lang.Object
implements CharacterClass
```
A character class represents a set of characters for regex matching purposes. The empty character class matches no characters

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static CharacterClass`	`getComplement()`
`static EmptyCharacterClass`	`getInstance()`
`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

- Method Detail
  - getInstance
```
public static EmptyCharacterClass getInstance()
```
  - getComplement
```
public static CharacterClass getComplement()
```
  - 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
  - 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