Android Spinner which displays list of countries where countries are displayed using java locale

package com.example.spinnercountries;

import java.util.ArrayList;

import java.util.Collections;
import java.util.Locale;

import android.os.Bundle;
import android.app.Activity;
import android.widget.ArrayAdapter;
import android.widget.Spinner;

public class MainActivity extends Activity {

    private Spinner country;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        country = (Spinner) findViewById(R.id.spinner1);

        Locale[] locales = Locale.getAvailableLocales();
        ArrayList<String> countries = new ArrayList<String>();
        for (Locale locale : locales) {
            String country = locale.getDisplayCountry();
            if (country.trim().length() > 0 && !countries.contains(country)) {
                countries.add(country);
            }
        }
        Collections.sort(countries);
        for (String country : countries) {
            System.out.println(country);
        }

        ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_spinner_item, countries);
        // set the view for the Drop down list
        dataAdapter
                .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        // set the ArrayAdapter to the spinner
        country.setAdapter(dataAdapter);
        country.setSelection(37);

        System.out.println("# countries found: " + countries.size());

    }

}

Activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/textView1"
        android:layout_below="@+id/textView1"
        android:layout_marginTop="33dp" />

</RelativeLayout>


Sample Output
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