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
// 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
// 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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