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Java.lang.Character.Subset Class in Java
  • Difficulty Level : Basic
  • Last Updated : 18 Apr, 2017

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.


  • 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.
   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);
      // Use of hashCode() : 
      int check1 = a.hashCode();
      System.out.println("hashCode " + a + " : " + check1);
      check1 = b.hashCode();
      System.out.println("hashCode " + b + " : " + check1);
      // 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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