HashMap values() Method in Java

Last Updated : 9 Jan, 2026

The java.util.HashMap.values() method of HashMap 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 HashMap.

  • Returns a Collection view backed by the HashMap, so changes in the map are reflected in the collection.
  • Allows duplicate values, as HashMap values are not required to be unique.
  • Commonly used for iterating, processing, and bulk operations on the values stored in the HashMap.

Example:

Java 
import java.util.HashMap;

public class GFG {
    public static void main(String[] args) {

        HashMap<Integer, String> map = new HashMap<>();

        map.put(1, "Java");
        map.put(2, "Python");
        map.put(3, "Java");

        for (String value : map.values()) {
            System.out.println(value);
        }
    }
}

Output
Java
Python
Java

Explanation: values() returns a collection containing all values of the HashMap.

Syntax

hashMap.values()

  • Parameters: This method does not accept any parameters.
  • Return Value: Returns a Collection containing all the values of the HashMap.

Mapping String values to Integer keys

This program demonstrates how the HashMap.values() method retrieves a collection view of all values stored in a HashMap.

Java 
import java.util.*;

public class GFG {
    public static void main(String[] args) {

        HashMap<Integer, String> map = new HashMap<>();

        map.put(10, "Geeks");
        map.put(15, "for");
        map.put(20, "Geeks");
        map.put(25, "Welcomes");
        map.put(30, "You");

        // Using values() method
        System.out.println("The collection is: " + map.values());
    }
}

Output
The collection is: [Geeks, Welcomes, Geeks, You, for]

Explanation:

  • Multiple key-value pairs are inserted using the put() method.
  • values() method retrieves a collection containing all values present in the map.

Note: The values() method returns a collection view, not a separate copy.

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