IdentityHashMap values() Method in Java
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() methodimport 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() methodimport 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.
