Java ConcurrentHashMap elements() Method

The elements() method of ConcurrentHashMap class returns an enumeration of the values in this table.

Syntax

Parameter

No parameter is passed.

Returns

an enumeration of the values in this table

Throws

NullPointerException

Example 1

import java.util.*; 
import java.util.concurrent.*; 
  
public class ConcurrentHashMapelementsExample1  { 
    public static void main(String[] args) 
    { 
        ConcurrentHashMap<Integer, String>   mymap = new ConcurrentHashMap<Integer,String>(); 
       mymap.put(10,"Ajava"); 
        mymap.put(20 ,"B.net"); 
        mymap.put(20 ,"Cpython"); 
        mymap.put(30,"Dc"); 
        mymap.put(40,"Ec++"); 

        System.out.println("The Map is: " +mymap); 
  
        Enumeration enumr = mymap.elements(); 
  
        System.out.println("The values are:"); 

        while (enumr.hasMoreElements()) { 
            System.out.println(enumr.nextElement()); 
        } 
    } 
}

Test it Now

Output:

The Map is: {20=Cpython, 40=Ec++, 10=Ajava, 30=Dc}
The values are:
Cpython
Ec++
Ajava
Dc

Example 2

import java.util.*; 
import java.util.concurrent.*; 
  
public class ConcurrentHashMapelementsExample2  { 
    public static void main(String[] args) 
    { 
        ConcurrentHashMap<String , String> 
            map = new ConcurrentHashMap<String , 
                                             String>(); 
       map.put("AA","1java"); 
        map.put("BB" ,"2.net"); 
        map.put("CC" ,"3python"); 
        map.put("DD","4c"); 
        map.put("EE","5c++"); 

        System.out.println("The Map is: " +map); 
  
        Enumeration enumr = map.elements(); 
  
        System.out.println("The values are:"); 

        while (enumr.hasMoreElements()) { 
            System.out.println(enumr.nextElement()); 
        } 
    } 
}

Test it Now

Output:

The Map is: {AA=1java, BB=2.net, CC=3python, DD=4c, EE=5c++}
The values are:
1java
2.net
3python
4c
5c++

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