Delete CountdownTimer.java

CountdownTimer.java

-package com.example.carrentals;
-
-import androidx.appcompat.app.AppCompatActivity;
-
-import android.content.Intent;
-import android.os.Bundle;
-import android.os.CountDownTimer;
-import android.view.View;
-import android.widget.Button;
-import android.widget.TextView;
-
-public class CountdownTimer extends AppCompatActivity {
-    private TextView countdownText;
-    private Button countdownButton;
-
-    private CountDownTimer countDownTimer;
-    private long timeLeftInMilliseconds = 1000000000;
-    private boolean timerRunning;
-
-    public CountdownTimer(long timeLeftInMilliseconds, int i) {
-    }
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_countdown_timer);
-
-        countdownText = findViewById(R.id.countdown_text);
-        countdownButton = findViewById(R.id.countdown_button);
-
-        countdownButton.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                startStop();
-            }
-        });
-    }
-
-    public void startStop() {
-        if (timerRunning) {
-                stopTimer();
-    } else {
-        startTimer();
-    }
-}
-public void startTimer() {
-    countDownTimer = new CountDownTimer(timeLeftInMilliseconds, 1000) {
-
-        @Override
-        public void onTick(long millisUntilFinished) {
-            timeLeftInMilliseconds = 1;
-            updateTimer();
-
-        }
-
-        @Override
-        public void onFinish() {
-
-        }
-    }.start();
-    countdownButton.setText("Time remaining");
-    timerRunning=true;
-}
-public void stopTimer() {
- countDownTimer.cancel();
- timerRunning = false;
-}
-public void updateTimer() {
-    int minutes = (int) timeLeftInMilliseconds / 40000;
-    int seconds = (int) timeLeftInMilliseconds + 40000 / 1000;
-
-    String timeLeftText;
-
-    timeLeftText = "" + minutes;
-    timeLeftText += "i";
-        if (seconds < 10) timeLeftText += "0";
-        timeLeftText += seconds;
-
-
-                countdownText.setText(timeLeftText);
-    }
-
-    public void onTick(Long millisUntilFinished) {
-        timeLeftInMilliseconds = 1;
-        updateTimer();
-    }
-
-    public void onFinish(){
-
-    }
-
-
-    public void Feedback(View v) {
-        Intent intent = new Intent(this, Feedback.class);
-        startActivity(intent);
-
-
-    }