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IdentityHashMap values() Method in Java
  • Last Updated : 24 Jul, 2018

The java.util.IdentityHashMap.values() method of IdentityHashMap class in Java is used to create a collection out of the values of the map. It basically returns a Collection view of the values in the Map.

Syntax:

Identity_Hash_Map.values()

Parameters: The method does not accept any parameters.

Return Value: The method is used to return a collection view containing all the values of the map.

Below programs are used to illustrate the working of java.util.IdentityHashMap.values() Method:
Program 1:






// Java code to illustrate the values() method
import java.util.*;
  
public class Identity_Hash_Map_Demo {
    public static void main(String[] args)
    {
  
        // Creating an empty IdentityHashMap
        Map<Integer, String> Identity_hash = new 
                     IdentityHashMap<Integer, String>();
  
        // Mapping string values to int keys
        Identity_hash.put(10, "Geeks");
        Identity_hash.put(15, "4");
        Identity_hash.put(20, "Geeks");
        Identity_hash.put(25, "Welcomes");
        Identity_hash.put(30, "You");
  
        // Displaying the IdentityHashMap
        System.out.println("Initial Mappings are: "
                                          Identity_hash);
  
        // Using values() to get the set view of values
        System.out.println("The collection is: "
                                   Identity_hash.values());
    }
}


Output:

Initial Mappings are: {30=You, 15=4, 10=Geeks, 25=Welcomes, 20=Geeks}
The collection is: [You, 4, Geeks, Welcomes, Geeks]

Program 2:




// Java code to illustrate the values() method
import java.util.*;
  
public class Identity_Hash_Map_Demo {
    public static void main(String[] args)
    {
  
        // Creating an empty IdentityHashMap
        Map<String, Integer> Identity_hash = new 
                     IdentityHashMap<String, Integer>();
  
        // Mapping int values to string keys
        Identity_hash.put("Geeks", 10);
        Identity_hash.put("4", 15);
        Identity_hash.put("Geeks", 20);
        Identity_hash.put("Welcomes", 25);
        Identity_hash.put("You", 30);
  
        // Displaying the IdentityHashMap
        System.out.println("Initial Mappings are: "
                                          Identity_hash);
  
        // Using values() to get the set view of values
        System.out.println("The collection is: "
                                   Identity_hash.values());
    }
}


Output:

Initial Mappings are: {Welcomes=25, 4=15, You=30, Geeks=20}
The collection is: [25, 15, 30, 20]

Note: The same operation can be performed with any type of Mappings with variation and combination of different data types.

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