Hashtable elements() Method in Java
Last Updated :
02 Jun, 2023
The elements() method in the Hashtable class in Java returns an enumeration of the values contained in the hashtable. The enumeration returned by this method traverses the hashtable’s values in the order in which they were added to the hashtable.
The elements() method is inherited from the java.util.Hashtable class’s parent class, java.util.Dictionary.
Here’s an example of using the elements() method:
Java
import java.util.Enumeration;
import java.util.Hashtable;
public class HashtableExample {
public static void main(String[] args) {
Hashtable<String, Integer> ht = new Hashtable<>();
ht.put( "Alice" , 25 );
ht.put( "Bob" , 30 );
ht.put( "Charlie" , 35 );
Enumeration<Integer> values = ht.elements();
while (values.hasMoreElements()) {
System.out.println(values.nextElement());
}
}
}
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The java.util.Hashtable.elements() method of the Hashtable class in Java is used to get the enumeration of the values present in the hashtable.
Syntax:
Enumeration enu = Hash_table.elements()
Parameters: The method does not take any parameters.
Return value: The method returns an enumeration of the values of the Hashtable.
Below programs are used to illustrate the working of the java.util.Hashtable.elements() method:
Program 1:
Java
import java.util.*;
public class Hash_Table_Demo {
public static void main(String[] args)
{
Hashtable<Integer, String> hash_table
= new Hashtable<Integer, String>();
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" );
System.out.println( "The Table is: " + hash_table);
Enumeration enu = hash_table.elements();
System.out.println(
"The enumeration of values are:" );
while (enu.hasMoreElements()) {
System.out.println(enu.nextElement());
}
}
}
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Output:
The Table is: {10=Geeks, 20=Geeks, 30=You, 15=4, 25=Welcomes}
The enumeration of values are:
Geeks
Geeks
You
4
Welcomes
Program 2:
Java
import java.util.*;
public class Hash_Table_Demo {
public static void main(String[] args)
{
Hashtable<String, Integer> hash_table
= new Hashtable<String, Integer>();
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 );
System.out.println( "The Table is: " + hash_table);
Enumeration enu = hash_table.elements();
System.out.println(
"The enumeration of values are:" );
while (enu.hasMoreElements()) {
System.out.println(enu.nextElement());
}
}
}
|
Output:
The Table is: {You=30, Welcomes=25, 4=15, Geeks=20}
The enumeration of values are:
30
25
15
20
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