How to create csv file in android studio ||csv file in java language via filewriter

 package com.mafaz.csvcreatefile;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.os.Environment;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        File folder = new File(Environment.getExternalStorageDirectory()+"/sensordata.csv");
        //String location = "/InternalStrorage/newCsvFile.csv";
        generateCsvFile(folder.toString());


    }
    private static void generateCsvFile(String fileName) {

        FileWriter writer = null;

        try {

            writer = new FileWriter(fileName);
            writer.append("Name");
            writer.append(',');
            writer.append("Number");
            writer.append('\n');

            writer.append("interview questions");
            writer.append(',');
            writer.append("001");
            writer.append('\n');

            writer.append("interview programs");
            writer.append(',');
            writer.append("004");
            writer.append('\n');

            System.out.println("CSV file is created...");

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                writer.flush();
                writer.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }



}

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>