How to Get All Values in a HashMap in Java

Through this example, we may simply learn how to iterate through the values contained in the HashMap object.To get a Collection of all the values in a HashMap, you need to use the values() method, and the return value is a Collection object.

Source Code

package com.beginner.examples;

import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;

public class IterateHashMapValuesExample {

	public static void main(String[] args) {
		// Create HashMap object
		HashMap map = new HashMap();

		// Put key-value
		map.put("1", "A");
		map.put("2", "B");
		map.put("3", "C");

		// Gets the collection of values in the HashMap
		Collection valueColl = map.values();
		
		//Get iterator
		Iterator iterator = valueColl.iterator();

		while (iterator.hasNext()) {
			String value = iterator.next();
			System.out.println(value);
		}
	}

}

Output:

C
B
A

References

Imported packages in Java documentation:

Collection
HashMap
Iterator