"error: cannot find symbol HashMap"

you need to import the HashMap to avoid the compile error

import java.util.HashMap;

You need to import the HashMap into the class

import java.util.HashMap;

public class Demo{

      public static void main(String args[]){
        System.out.println("============Starting Hashmap============");


        //hashmap portion
        HashMap<String, Integer> myMap = new HashMap<String, Integer>();

        System.out.println("============Ending Hashmap============");
     }
}