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Java program to get all the values from a HashMap collection

Given a HashMap collection, we have to get all the values from it.
Submitted by Nidhi, on June 11, 2022

Problem statement

In this program, we will create a collection of key/value pair information using the HashMap collection. Then we will get all values from the HashMap collection and print the result.

Source Code

The source code to get all values from a HashMap collection is given below. The given program is compiled and executed successfully.

// Java program to get all values from 
// a HashMap collection

import java.util.*;

public class Main {
  public static void main(String[] args) {
    HashMap < Integer, String > emp = new HashMap < > ();

    emp.put(101, "Amit");
    emp.put(102, "Arun");
    emp.put(103, "Akash");
    emp.put(104, "Ram");
    emp.put(105, "Mohan");

    System.out.println("Values:");
    for (Integer key: emp.keySet())
      System.out.println(" " + emp.get(key));
  }
}

Output

Values:
 Amit
 Arun
 Akash
 Ram
 Mohan

Explanation

In the above program, we imported the "java.util.*" package to use the HashMap class. Here, we created a public class Main.

The Main class contains a main() method. The main() method is the entry point for the program. And, created an object of the HashMap class and store the employee information using the put() method. Then we get all values from the HashMap collection and printed the result.

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