Skip to content
Related Articles

Related Articles

Hashtable toString() Method in Java

Improve Article
Save Article
Like Article
  • Difficulty Level : Basic
  • Last Updated : 24 Jun, 2021

The java.util.Hashtable.toString() is an inbuilt method of Hashtable that is used to get a string representation of the objects of Hashtable in the form of a set of entries separated by “, “. So basically the toString() method is used to convert all the elements of Hashtable into String.
Syntax: 

Hash_Table.toString()

Parameter: The method does not take any parameters.
Return value: The method returns the set consisting of the string representation of the elements of the hash table.
Below programs illustrate the working of java.util.Hashtable.toString() method: 
Program 1: 
 

Java




// Java code to illustrate the toString() method
import java.util.*;
 
public class Hash_Table_Demo {
    public static void main(String[] args)
    {
 
        // Creating an empty Hashtable
        Hashtable<Integer, String> hash_table =
                            new Hashtable<Integer, String>();
 
        // Inserting elements into the table
        hash_table.put(10, "Geeks");
        hash_table.put(15, "4");
        hash_table.put(20, "Geeks");
        hash_table.put(25, "Welcomes");
        hash_table.put(30, "You");
 
        // Displaying the Hashtable
        System.out.println("Initial table is: " + hash_table);
 
        // Displaying the string representation
        System.out.println("The set is: " + hash_table.toString());
    }
}
Output: 
Initial table is: {10=Geeks, 20=Geeks, 30=You, 15=4, 25=Welcomes}
The set is: {10=Geeks, 20=Geeks, 30=You, 15=4, 25=Welcomes}

 

Program 2: 
 

Java




// Java code to illustrate the toString() method
import java.util.*;
 
public class Hash_Table_Demo {
    public static void main(String[] args)
    {
 
        // Creating an empty Hashtable
        Hashtable<String, Integer> hash_table =
                           new Hashtable<String, Integer>();
 
        // Inserting elements into the table
        hash_table.put("Geeks", 10);
        hash_table.put("4", 15);
        hash_table.put("Geeks", 20);
        hash_table.put("Welcomes", 25);
        hash_table.put("You", 30);
 
        // Displaying the Hashtable
        System.out.println("Initial Table is: " + hash_table);
 
        // Displaying the string representation
        System.out.println("The set is: " + hash_table.toString());
    }
}
Output: 
Initial Table is: {You=30, Welcomes=25, 4=15, Geeks=20}
The set is: {You=30, Welcomes=25, 4=15, Geeks=20}

 


My Personal Notes arrow_drop_up
Recommended Articles
Page :

Start Your Coding Journey Now!