Create application for demonstration of android activity life cycle

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.java

package com.example.helloworld;

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    TextView textView;
    String text;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        textView = findViewById(R.id.textView);
        text = textView.getText().toString();
        text = text + "\n onCreate Method";
        textView.setText(text);
    }
    @Override
    protected void onStart() {
        super.onStart();
        text = textView.getText().toString();
        text = text + "\n onStart Method";
        textView.setText(text);
    }
    @Override
    protected void onResume() {
        super.onResume();
        text = textView.getText().toString();
        text = text + "\n onResume Method";
        textView.setText(text);
    }
    @Override
    protected void onPause() {
        super.onPause();
        text = textView.getText().toString();
        text = text + "\n onPause Method";
        textView.setText(text);
    }
    @Override
    protected void onStop() {
        super.onStop();
        text = textView.getText().toString();
        text = text + "\n onStop Method";
        textView.setText(text);
    }
    @Override
    protected void onRestart() {
        super.onRestart();
        text = textView.getText().toString();
        text = text + "\n onRestart Method";
        textView.setText(text);
    }
    @Override
    protected void onDestroy() {
        super.onDestroy();
        text = textView.getText().toString();
        text = text + "\n onDestroy Method";
        textView.setText(text);
    }
}

Output