How to Implement RecylerView Inside a Dialogue Window?

package com.example.geeksforgeeks;

import java.io.Serializable;

// Employee model
public class Employee implements Serializable {
    private String name;    // name of the employee
    private String email;   // email of the employee

    public Employee(String name, String email) {
        this.name = name;
        this.email = email;
    }

    public String getName() {
        return name;
    }

    public String getEmail() {
        return email;
    }
}

package com.example.geeksforgeeks;

import java.util.ArrayList;

public class Constants {
    public static ArrayList<Employee> getEmployeeData() {
        ArrayList<Employee> employeeList = new ArrayList<>();
        Employee emp1 = new Employee("Chinmaya Mohapatra", "chinmaya@gmail.com");
        employeeList.add(emp1);
        Employee emp2 = new Employee("Ram prakash", "ramp@gmail.com");
        employeeList.add(emp2);
        Employee emp3 = new Employee("OMM Meheta", "mehetaom@gmail.com");
        employeeList.add(emp3);
        Employee emp4 = new Employee("Hari Mohapatra", "harim@gmail.com");
        employeeList.add(emp4);
        Employee emp5 = new Employee("Abhisek Mishra", "mishraabhi@gmail.com");
        employeeList.add(emp5);
        Employee emp6 = new Employee("Sindhu Malhotra", "sindhu@gmail.com");
        employeeList.add(emp6);
        Employee emp7 = new Employee("Anil sidhu", "sidhuanil@gmail.com");
        employeeList.add(emp7);
        Employee emp8 = new Employee("Sachin sinha", "sinhas@gmail.com");
        employeeList.add(emp8);
        Employee emp9 = new Employee("Amit sahoo", "sahooamit@gmail.com");
        employeeList.add(emp9);
        Employee emp10 = new Employee("Raj kumar", "kumarraj@gmail.com");
        employeeList.add(emp10);

        return employeeList;
    }
}

package com.example.geeksforgeeks;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import androidx.recyclerview.widget.RecyclerView;
import java.util.ArrayList;

// Define a class for the adapter,
// which extends RecyclerView.Adapter
public class EmployeeAdapter
    extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    private Context context;
    // The adapter needs a list of data to display
    private ArrayList<Employee> list;

    public EmployeeAdapter(Context context,
                           ArrayList<Employee> list)
    {
        this.context = context;
        this.list = list;
    }

    // This method is called when the RecyclerView needs a
    // new ViewHolder to display an item
    @Override
    public RecyclerView.ViewHolder
    onCreateViewHolder(ViewGroup parent, int viewType)
    {
        // Use the LayoutInflater to
        // create a new view from the
        // item_employee layout file
        View view = LayoutInflater.from(context).inflate(
            R.layout.item_employee, parent, false);
        // Return a new ViewHolder that
        // holds the newly created view
        return new MyViewHolder(view);
    }

    // This method is called when the RecyclerView needs
    // to display the data at a certain position
    @Override
    public void
    onBindViewHolder(RecyclerView.ViewHolder holder,
                     int position)
    {
        // Get the item at the specified position from the
        // list
        Employee item = list.get(position);

        // Check if the ViewHolder is of type MyViewHolder
        if (holder instanceof MyViewHolder) {
            // If it is, set the name and email TextViews
            // to the corresponding values in the item
            ((MyViewHolder)holder)
                .name.setText(item.getName());
            ((MyViewHolder)holder)
                .email.setText(item.getEmail());
        }
    }

    // This method returns the total
    // number of items in the list
    @Override public int getItemCount()
    {
        return list.size();
    }

    // Define a ViewHolder class that holds references
    // to the TextViews in the item_employee layout file
    private static class MyViewHolder
        extends RecyclerView.ViewHolder {
        TextView name;
        TextView email;

        MyViewHolder(View view)
        {
            super(view);
            name = view.findViewById(R.id.tvName);
            email = view.findViewById(R.id.tvEmail);
        }
    }
}

package com.example.geeksforgeeks;

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import java.util.ArrayList;

// Define a DialogList class that extends Dialog
public abstract class DialogList extends Dialog {
    private ArrayList<Employee> list;
    private EmployeeAdapter adapter;
    public DialogList(Context context,
                      ArrayList<Employee> list)
    {
        super(context);
        this.list = list;
    }

    // This method is called when the Dialog is created
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState != null
                           ? savedInstanceState
                           : new Bundle());

        // Use the LayoutInflater to inflate the
        // dialog_list layout file into a View object
        View view
            = LayoutInflater.from(getContext())
                  .inflate(R.layout.dialog_list, null);

        // Set the dialog's content view
        // to the newly created View object
        setContentView(view);

        // Allow the dialog to be dismissed
        // by touching outside of it
        setCanceledOnTouchOutside(true);

        // Allow the dialog to be canceled
        // by pressing the back button
        setCancelable(true);

        // Set up the RecyclerView in the dialog
        setUpRecyclerView(view);
    }

    // This method sets up the RecyclerView in the dialog
    private void setUpRecyclerView(View view)
    {
        // Find the RecyclerView in the layout file and set
        // its layout manager to a LinearLayoutManager
        RecyclerView recyclerView
            = view.findViewById(R.id.rvList);
        recyclerView.setLayoutManager(
            new LinearLayoutManager(getContext()));

        // Create a new instance of the EmployeeAdapter
        // and set it as the RecyclerView's adapter
        adapter = new EmployeeAdapter(getContext(), list);
        recyclerView.setAdapter(adapter);
    }
}

package com.example.geeksforgeeks;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import androidx.appcompat.app.AppCompatActivity;
import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Find the "open" button in the layout file
        // and set an onClickListener for it
        Button btnOpen = findViewById(R.id.open);
        btnOpen.setOnClickListener(
            new View.OnClickListener() {
                @Override public void onClick(View v)
                {
                    // Call the EmployeeListDialough
                    // method when the button is clicked
                    EmployeeListDialough();
                }
            });
    }

    // This method creates and shows an
    // instance of the DialogList dialog
    public void EmployeeListDialough()
    {
        // Get the employee data from the Constants class
        ArrayList<Employee> employeeList
            = Constants.getEmployeeData();
        // Create a new instance of the DialogList
        // dialog, passing in the activity
        // and employee data as parameters
        DialogList listDialog = new DialogList(
            this, employeeList) {
            @Override
            public void onCreate(Bundle savedInstanceState)
            {
                super.onCreate(savedInstanceState);

                // Set up any additional dialog features
            }
        };
        // Show the dialog
        listDialog.show();
    }
}