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Java.lang.Character.UnicodeBlock Class in Java - GeeksforGeeks

Java.lang.Character.UnicodeBlock Class in Java

Last Updated : 13 Sep, 2023

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


 // 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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