Check Internet Connection in Android

 <?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:id="@+id/idRLContainer"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">
    <ImageView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="84dp"
        android:src="@drawable/company_logo"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.497"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
    <Button
        android:id="@+id/btn_check"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="Check Internet Connection"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
 </androidx.constraintlayout.widget.ConstraintLayout>

 import android.content.Context;
 import android.content.IntentFilter;
 import android.net.ConnectivityManager;
 import android.net.NetworkInfo;
 import android.os.Build;
 import android.os.Bundle;
 import android.widget.Button;
 import android.widget.Toast;
 import androidx.appcompat.app.AppCompatActivity;

 public class MainActivity extends AppCompatActivity implements ConnectionReceiver.ReceiverListener {

    private Button btn_check;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_two);
        btn_check = findViewById(R.id.btn_check);
        checkConnection();
        btn_check.setOnClickListener(view -> {
            checkConnection();
        });

    }

    private void checkConnection() {
        //create object of Intent filter
        IntentFilter intentFilter = new IntentFilter();
        //set action on network
        intentFilter.addAction("android.new.conn.CONNECTIVITY_CHANGE");
        // register receiver
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            registerReceiver(new ConnectionReceiver(), intentFilter, Context.RECEIVER_NOT_EXPORTED);
        }
        // Initialize listener
        ConnectionReceiver.Listener = this;
        // Initialize connectivity manager
        ConnectivityManager manager = (ConnectivityManager) getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
        // Initialize network info
        NetworkInfo networkInfo = manager.getActiveNetworkInfo();
        // get connection status
        boolean isConnected = networkInfo != null && networkInfo.isConnectedOrConnecting();
        //set Toast
        showToast(isConnected);
    }

    private void showToast(boolean isConnected) {
        String message;
        if (isConnected) {
            message = "Connected to Internet";
        } else {
            message = "Not Connected to Internet";
        }
        Toast.makeText(this, message, Toast.LENGTH_SHORT).show();
    }

    @Override
     public void onNetworkChange(boolean isConnected) {
         // display Toast
         showToast(isConnected);
     }

 }