package com.example.android.quakereport;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import java.util.List;

/**
 * Created by jaspreet.singh on 21-07-2017.
 */

public class EarthquakeAdapter extends ArrayAdapter<Earthquake> {
    /*
     *Construct a new {@Link EarthquakeAdapter}
     *
     * @param context of the  app
     * @param earthquakes is the list of the earthquakes, which is the data source of the adapter
     */

    public EarthquakeAdapter (Context context, List<Earthquake> earthquakes) {
        super(context, 0, earthquakes);
    }

    /*
     * Returns a list view that displays the information about the earthquake at the
     * given position in the list of earthquakes
     */
    @Override
    public View getView (int position, View convertView, ViewGroup parent)  {
        //Check if there is an existing list item view {called convertView} that we can reuse,
        //otherwise, if convertView is null, then inflate a new list item layout.
        View listItemView = convertView;
        if (listItemView == null)   {
            listItemView = LayoutInflater.from(getContext()).inflate(
                    R.layout.list_item, parent, false);
        }

        // Find the earthquake at the given position in the list of earthquakes
        Earthquake currentEarthquake = getItem(position);

        // Find the TextView with view ID magnitude
        TextView magnitudeView = (TextView) listItemView.findViewById(R.id.tv_magnitude);
        // Display the magnitude of the current earthquake in that TextView
        magnitudeView.setText(currentEarthquake.getMagnitude());

        // Find the TextView with view ID location
        TextView locationView = (TextView) listItemView.findViewById(R.id.tv_location);
        // Display the location of the current earthquake in that TextView
        locationView.setText(currentEarthquake.getLocation());

        // Find the TextView with view ID date
        TextView dateView = (TextView) listItemView.findViewById(R.id.tv_date);
        // Display the date of the current earthquake in that TextView
        dateView.setText(currentEarthquake.getDate());

        // Return the list View item that is now showing the appropriate data
        return listItemView;
    }
}

package com.example.android.quakereport;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.TextView;

import java.util.Date;
import java.util.List;

/**
 * Created by jaspreet.singh on 21-07-2017.
 */

public class EarthquakeAdapter extends ArrayAdapter<Earthquake> {
    /*
     *Construct a new {@Link EarthquakeAdapter}
     *
     * @param context of the  app
     * @param earthquakes is the list of the earthquakes, which is the data source of the adapter
     */

    public EarthquakeAdapter (Context context, List<Earthquake> earthquakes) {
        super(context, 0, earthquakes);
    }

    /*
     * Returns a list view that displays the information about the earthquake at the
     * given position in the list of earthquakes
     */
    @Override
    public View getView (int position, View convertView, ViewGroup parent)  {
        //Check if there is an existing list item view {called convertView} that we can reuse,
        //otherwise, if convertView is null, then inflate a new list item layout.
        View listItemView = convertView;
        if (listItemView == null)   {
            listItemView = LayoutInflater.from(getContext()).inflate(
                    R.layout.list_item, parent, false);
        }

        // Find the earthquake at the given position in the list of earthquakes
        Earthquake currentEarthquake = getItem(position);

        // Find the TextView with view ID magnitude
        TextView magnitudeView = (TextView) listItemView.findViewById(R.id.tv_magnitude);
        // Display the magnitude of the current earthquake in that TextView
        magnitudeView.setText(currentEarthquake.getMagnitude());

        // Find the TextView with view ID location
        TextView locationView = (TextView) listItemView.findViewById(R.id.tv_location);
        // Display the location of the current earthquake in that TextView
        locationView.setText(currentEarthquake.getLocation());

        //Create a new Data object  from the time in milliseconds of the earthquake
        Date dateObject = new Date(currentEarthquake.getTimeInMiliseconds());

        // Find the TextView with view ID date
        TextView dateView = (TextView) listItemView.findViewById(R.id.tv_date);
        // Display the date of the current earthquake in that TextView
        dateView.setText(currentEarthquake.getDate());

        // Return the list View item that is now showing the appropriate data
        return listItemView;
    }
}

Create date object to store value in millisecond