Bottom Navigation With Fragment :

1. Create All Fragment :

2.Drawable Icon 

3.menu create

4.bottom_item.xml:

<?xml version="1.0" encoding="utf-8"?>

<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <item

        android:id="@+id/home"

        android:title="Home"

        android:icon="@drawable/baseline_home_24"/>

    <item

        android:id="@+id/notification"

        android:title="Notification"

        android:icon="@drawable/baseline_notifications_24"/>

    <item

        android:id="@+id/person"

        android:title="Person"

        android:icon="@drawable/baseline_person_24"/>

</menu>

5.activity.main.xml:

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout 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/main"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context=".MainActivity">

    <androidx.appcompat.widget.Toolbar

        android:id="@+id/toolbar"

        android:layout_width="match_parent"

        android:background="@color/black"

        android:layout_height="wrap_content">

        <ImageView

            android:layout_width="30dp"

            android:layout_height="30dp"

            android:src="@drawable/baseline_menu_24"/>

        <TextView

            android:layout_width="match_parent"

            android:layout_height="wrap_content"

            android:textColor="@color/white"

            android:layout_marginStart="30dp"

            android:text="@string/app_name"

            android:textSize="20sp"/>

    </androidx.appcompat.widget.Toolbar>

    <FrameLayout

        android:id="@+id/farmelayout"

        android:layout_below="@+id/toolbar"

        android:layout_width="match_parent"

        android:layout_above="@+id/bottomnavigation"

        android:layout_height="match_parent"/>

    <com.google.android.material.bottomnavigation.BottomNavigationView

        android:id="@+id/bottomnavigation"

        android:background="@color/white"

        android:layout_width="match_parent"

        app:itemRippleColor="#E91E63"

        android:layout_height="wrap_content"

        android:layout_alignParentBottom="true"

        app:menu="@menu/bottom_item"/>

</RelativeLayout>

6.MainActivity.java:

package com.abdulahad.bottomnavigation;

import android.os.Bundle;

import android.view.MenuItem;

import androidx.activity.EdgeToEdge;

import androidx.annotation.NonNull;

import androidx.appcompat.app.AppCompatActivity;

import androidx.core.graphics.Insets;

import androidx.core.view.ViewCompat;

import androidx.core.view.WindowInsetsCompat;

import androidx.fragment.app.FragmentManager;

import androidx.fragment.app.FragmentTransaction;

import com.google.android.material.bottomnavigation.BottomNavigationView;

import com.google.android.material.navigation.NavigationBarView;

public class MainActivity extends AppCompatActivity {

    BottomNavigationView bottomnavigation;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        //......................................................

        //.......................................................

        FragmentManager fragmentManager = getSupportFragmentManager();

        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

        fragmentTransaction.add(R.id.farmelayout,new HomeFragment());

        fragmentTransaction.commit();

        bottomnavigation = findViewById(R.id.bottomnavigation);

        bottomnavigation.setOnItemSelectedListener(new NavigationBarView.OnItemSelectedListener() {

            @Override

            public boolean onNavigationItemSelected(@NonNull MenuItem item) {

                int itemId = item.getItemId();

                if (itemId==R.id.home){

                    FragmentManager fragmentManager = getSupportFragmentManager();

                    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

                    fragmentTransaction.add(R.id.farmelayout,new HomeFragment());

                    fragmentTransaction.commit();

                } else if (itemId==R.id.notification) {

                    FragmentManager fragmentManager = getSupportFragmentManager();

                    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

                    fragmentTransaction.add(R.id.farmelayout,new NotificationFragment());

                    fragmentTransaction.commit();

                } else if (itemId==R.id.person) {

                    FragmentManager fragmentManager = getSupportFragmentManager();

                    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();

                    fragmentTransaction.add(R.id.farmelayout,new PersonFragment());

                    fragmentTransaction.commit();

                }

                return true;

            }

        });

        //......................................................

       //.......................................................

    }

}