Java.lang.Character.Subset Class in Java

Character.Subset Class represents particular subsets of the Unicode(standards using hexadecimal values to express characters – 16bit) character set. The subset, it defines in Character set is UnicodeBlock.

Declaration :

public static class Character.Subset
   extends Object

Constructors :

protected Character.Subset(String str) : Constructs new subset instance.

Methods:

equals() : java.lang.Character.Subset.equals() tells wheteher the two Subset Object are equal or not.
Syntax :

public final boolean equals(Object o)
Parameters : 
o : object to be compare with.
Return  :
true : if o equals argumented object, else false.

hashCode() : java.lang.Character.Subset.hashCode() returns the hashCode value of the Subset..
Syntax :
```
public final int hashCode()
Parameters : 
---
Return  :
hashCode of the argumented object.
```

toString(): java.lang.Character.Subset.toString() returns name of the Subset.
Syntax :

public final String toString()
Parameters : 
---
Return  :
string representation of the argumented object.

// Java Program illustrating the use of Character.Subset class Methods. 
  
import java.lang.*; 
  
public class CharacterSubsetDemo extends Character.Subset  
{ 
   CharacterSubsetDemo(String s)  
   { 
      // Use of super keyword :  
      // Invokes immediate parent class constructor. 
      super(s);  
   } 
  
   public static void main(String[] args)  
   { 
      // Initializing two Subsets. 
      CharacterSubsetDemo a = new CharacterSubsetDemo("geeks"); 
      CharacterSubsetDemo b = new CharacterSubsetDemo("for"); 
  
      // use of equals() :  
      boolean check2 = a.equals(a); 
      System.out.println("Is a equals a ? : " + check2); 
      check2 = b.equals(a); 
      System.out.println("Is b equals a ? : " + check2); 
      System.out.println(); 
        
      // Use of hashCode() :  
      int check1 = a.hashCode(); 
      System.out.println("hashCode " + a + " : " + check1); 
      check1 = b.hashCode(); 
      System.out.println("hashCode " + b + " : " + check1); 
      System.out.println(); 
        
      // Use of toString() :  
      System.out.println("a : " + a.toString()); 
      System.out.println("b : " + b.toString()); 
   } 
}  

Output :

Is a equals a ? : true
Is b equals a ? : false

hashCode geeks : 366712642
hashCode for : 1829164700

a : geeks
b : for

Note :
lang.Character.Subset Class inherits others methods from java.lang.Object class. For details about java.lang.Object, refer :
Object class in Java.

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