Character.Subset

AI-generated Key Takeaways

• Character.Subset represents specific subsets of the Unicode character set, with Character.UnicodeBlock being a primary example.

• This class provides a way to categorize and work with groups of Unicode characters, like those in a specific language or script.

• It includes methods for comparison (equals), hashing (hashCode), and getting the subset's name (toString).

• Character.Subset is extensible, allowing other parts of the Java API to define their own custom character subsets.

public static class Character.Subset extends Object

Known Direct Subclasses Character.UnicodeBlock Character.UnicodeBlock A family of character subsets representing the character blocks in the Unicode specification.

Instances of this class represent particular subsets of the Unicode character set. The only family of subsets defined in the Character class is Character.UnicodeBlock. Other portions of the Java API may define other subsets for their own purposes.

Protected Constructor Summary

Subset(String name) Constructs a new Subset instance.

Public Method Summary

final boolean	equals(Object obj) Compares two Subset objects for equality.
final int	hashCode() Returns the standard hash code as defined by the Object.hashCode() method.
final String	toString() Returns the name of this subset.

Inherited Method Summary

From class java.lang.Object

Object	clone() Creates and returns a copy of this Object.
boolean	equals(Object obj) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of Class that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the wait() methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait(long timeout, int nanos) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait(long timeout) Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object or until the specified timeout expires.
final void	wait() Causes the calling thread to wait until another thread calls the notify() or notifyAll() method of this object.

Protected Constructors

protected Subset (String name)

Constructs a new Subset instance.

Parameters

name	The name of this subset

Throws

NullPointerException	if name is null

Public Methods

public final boolean equals (Object obj)

Compares two Subset objects for equality. This method returns true if and only if this and the argument refer to the same object; since this method is final, this guarantee holds for all subclasses.

Parameters

obj	the object to compare this instance with.

Returns

• true if the specified object is equal to this Object; false otherwise.

public final int hashCode ()

Returns the standard hash code as defined by the Object.hashCode() method. This method is final in order to ensure that the equals and hashCode methods will be consistent in all subclasses.

Returns

• this object's hash code.

public final String toString ()

Returns the name of this subset.

Returns

• a printable representation of this object.