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Java Hashtable equals() Method with Example

Hashtable Class equals() method: Here, we are going to learn about the equals() method of Hashtable Class with its syntax and example.
Submitted by Preeti Jain, on February 17, 2020

Hashtable Class equals() method

  • equals() method is available in java.util package.
  • equals() method is used to check whether equality of this Hashtable with the given Object or not.
  • equals() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
  • equals() method does not throw an exception at the time of checking the equality of two objects.

Syntax:

    public boolean equals(Object ob);

Parameter(s):

  • Object ob – represents the object to be checked for equality.

Return value:

The return type of the method is boolean,

  • It returns true when this Hashtable is the same as the given object.
  • It returns false when this Hashtable is not the same as the given object.

Example:

// Java program to demonstrate the example // of boolean equals(Object ob) method of Hashtable import java.util.*; public class EqualsOfHashtable { public static void main(String[] args) { // Instantiate two hashtable object Hashtable ht = new Hashtable(); Hashtable comp_ht = new Hashtable(); // By using put() method is to // add the linked values in an Hashtable ht ht.put(10, "C"); ht.put(20, "C++"); ht.put(30, "JAVA"); ht.put(40, "PHP"); ht.put(50, "SFDC"); // By using put() method is to // add the linked values in an // Hashtable comp_ht comp_ht.put(60, "COBOL"); comp_ht.put(70, "HTML"); // Display Hashtable System.out.println("Hashtable: " + ht); // By using equals() method isto // check equality of two hashtable objects boolean status = ht.equals(comp_ht); // Display Status of Hashtable System.out.println("ht.equals(comp_ht): " + status); } }

Output

Hashtable: {10=C, 20=C++, 30=JAVA, 40=PHP, 50=SFDC}
ht.equals(comp_ht): false
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