android life cycle methods example

package com.example.teachingdemoapp;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.Log;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

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

    @Override
    protected void onStart() {
        super.onStart();
        printDemo("onStart");
    }

    @Override
    protected void onResume() {
        super.onResume();
        printDemo("onResume");
    }

    @Override
    protected void onPause() {
        super.onPause();
        printDemo("onPause");
    }

    @Override
    protected void onStop() {
        super.onStop();
        printDemo("onStop");
    }

    @Override
    protected void onRestart() {
        super.onRestart();
        printDemo("onRestart");
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        printDemo("onDestroy");
    }


    void printDemo(String message){
        Log.d("MainActivity",message);
        Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
    }
}