Java.lang.Character.UnicodeBlock Class in Java

Character.UnicodeBlock Class represents particular Character blocks of the Unicode(standards using hexadecimal values to express characters – 16 bit) specifications. Character Blocks define characters used for specific purpose.

Declaration :

public static final class Character.UnicodeBlock
   extends Character.Subset

Methods of Character.UnicodeBlock Class :

• forName() : java.lang.Character.UnicodeBlock.forName() returns the name of Unicode Blocks, which are determined by the Unicode Standards.
  The method accepts argument as Canonical Block as per Unicode Standards.
  Syntax :

  public static final Character.UnicodeBlock forName(String block)
  Parameters : 
  block : Name of UniCode Block.
  Return  :
  instance of UniCode Block.
  Exception : 
  -> IllegalArgumentException
  -> NullPointerException
  

• of(char ch) : java.lang.Character.Subset.of(char ch) returns the UniCode Block having the argumented character or null if the character is not a part of any defined Unicode Block.
  Syntax :

  public static Character.UnicodeBlock of(char ch)
  Parameters : 
  ch : character to be found.
  Return  :
  returns the UniCode Block or null.
  Exception : 
  -> IllegalArgumentException
  

• of(int UCPoint) : java.lang.Character.Subset.of(int UCPoint)returns the object having the argumented UniCode – Point or null if the character is not a part of any defined Unicode Block.
  Syntax :

  public final String toString()
  Parameters : 
  ---
  Return  :
  returns the object having the argumented UniCode - Point or null
  Exception : 
  -> IllegalArgumentException
  

// Java Program illustrating the use of
// Character.UnicodeBlock class Methods.
import java.lang.*;

public class CharacterSubsetDemo
{
   public static void main(String[] args)
   {
      // Use of forName() :
      // returns Unicode Blocks, as per Unicode Standards
      System.out.println("Using UnicodeBlock.forName() : ");
      System.out.println(Character.UnicodeBlock.forName("OLDITALIC"));
      System.out.println(Character.UnicodeBlock.forName("NUMBERFORMS"));
      System.out.println(Character.UnicodeBlock.forName("MALAYALAM") + "\n");

      // Use of(char ch) :
      System.out.println("Using UnicodeBlock.of(char ch) : ");
      System.out.println(Character.UnicodeBlock.of(' '));
      System.out.println(Character.UnicodeBlock.of('\u21ac') + "\n");

      // Use of(int UCPoint) :
      System.out.println("Using UnicodeBlock.of(int UCPoint) : ");
      System.out.println(Character.UnicodeBlock.of(1609));
      System.out.println(Character.UnicodeBlock.of(1565));

   }
}

Output :

Using UnicodeBlock.forName() : 
OLD_ITALIC
NUMBER_FORMS
MALAYALAM

Using UnicodeBlock.of(char ch) : 
BASIC_LATIN
ARROWS

Using UnicodeBlock.of(int UCPoint) : 
ARABIC
ARABIC

Note :
lang.Character.UnicodeBlock Class inherits others methods from lang.Character.Subset Class class which in turn inherits methods from lang.Character.Object class.

For further details about java.lang.Object, refer :
lang.Character.Subset Class in Java.
Object class in Java.

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