How can I read values from XML and save it in Hashmap using Java

You should use hash map when you dont know the fields

The rite way for you problem is to build a pojo class like this

public class MyPojo
{
    private Entities Entities;

    public Entities getEntities ()
    {
        return Entities;
    }

    public void setEntities (Entities Entities)
    {
        this.Entities = Entities;
    }

    @Override
    public String toString()
    {
        return "ClassPojo [Entities = "+Entities+"]";
    }
}


public class Entities
{
    private String TotalResults;

    private Entity[] Entity;//you can use List<> insted 

    public String getTotalResults ()
    {
        return TotalResults;
    }

    public void setTotalResults (String TotalResults)
    {
        this.TotalResults = TotalResults;
    }

    public Entity[] getEntity ()
    {
        return Entity;
    }

    public void setEntity (Entity[] Entity)
    {
        this.Entity = Entity;
    }

    @Override
    public String toString()
    {
        return "ClassPojo [TotalResults = "+TotalResults+", Entity = "+Entity+"]";
    }
}

I have made 2 pojos for your better understanding

you can create the rest as related to xml. Later you can just use

            File file = new File("My.xml");
            JAXBContext jaxbContext = JAXBContext.newInstance(MyPojo.class);

            Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
            MyPojo myPojo = (MyPojo) jaxbUnmarshaller.unmarshal(file);
            System.out.println(myPojo);//get your value with getter setter.

//Description, id and name can be retrieved.

In general, you use a Collection (List, Map, Set) to store objects with similar characteristics, that's why generics exist.