How to Use LocalBroadcastManager 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">

    <TextView
        android:id="@+id/txtTitle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:layout_marginTop="80dp"
        android:text="Candidroot solutions"
        android:textAlignment="center"
        android:textSize="18sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.842"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/txtTitlemain"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:layout_marginTop="124dp"
        android:padding="10dp"
        android:text="Welcome"
        android:textAlignment="center"
        android:textAllCaps="false"
        android:textColor="@color/black"
        android:textSize="30sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="1.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/txtTitle" />

    <Button
        android:id="@+id/btnSendBoradcast"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/txtTitlemain"
        android:layout_centerInParent="true"
        android:layout_marginTop="120dp"
        android:text="Send BroadCast"
        android:textAllCaps="false"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/txtTitlemain" />
 </androidx.constraintlayout.widget.ConstraintLayout>

 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.os.Bundle;
 import android.widget.Button;
 import android.widget.TextView;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.localbroadcastmanager.content.LocalBroadcastManager;
 
 public class MainActivity extends AppCompatActivity {
    private TextView txtTitle;
    private Button btnSendBoradcast;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_two);
        txtTitle = findViewById(R.id.txtTitlemain);
        btnSendBoradcast = findViewById(R.id.btnSendBoradcast);
        LocalBroadcastManager.getInstance(this).registerReceiver(broadcastReceiver, new IntentFilter("custom-action-local-broadcast"));
        btnSendBoradcast.setOnClickListener(v -> {

            Intent intent = new Intent("custom-action-local-broadcast");

            intent.putExtra("message", "Welcome \n to \n CandidRoot Solutions ");

            LocalBroadcastManager.getInstance(MainActivity.this).sendBroadcast(intent);
        });

    }

    private BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {

        @Override
        public void onReceive(Context context, Intent intent) {
            String message = intent.getStringExtra("message");
            txtTitle.setText(message);
         }
     };
 
 }