Android Create Notification Channel using java

Coding

public static final String NOTIFICATION_CHANNEL_ID = "10001" ;
private final static String default_notification_channel_id = "default" ;

private void notification(){
    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(MainActivityNew.this,
            default_notification_channel_id )
            .setSmallIcon(R.drawable. ic_launcher_foreground )
            .setContentTitle( "Notification" )
            .setContentText( "My test notification" );
    NotificationManager mNotificationManager = (NotificationManager) MainActivityNew.this.getSystemService(Context. NOTIFICATION_SERVICE ) ;
    if (android.os.Build.VERSION. SDK_INT >= android.os.Build.VERSION_CODES. O ) {
        AudioAttributes audioAttributes = new AudioAttributes.Builder()
                .setContentType(AudioAttributes. CONTENT_TYPE_SONIFICATION )
                .setUsage(AudioAttributes. USAGE_ALARM )
                .build() ;
        int importance = NotificationManager. IMPORTANCE_HIGH ;
        NotificationChannel notificationChannel = new
                NotificationChannel( NOTIFICATION_CHANNEL_ID , "NOTIFICATION_CHANNEL_NAME" , importance) ;
        notificationChannel.enableLights( true ) ;
        notificationChannel.setLightColor(Color. RED ) ;
        notificationChannel.enableVibration( true ) ;
        notificationChannel.setVibrationPattern( new long []{ 100 , 200 , 300 , 400 , 500 , 400 , 300 , 200 , 400 }) ;
        mBuilder.setChannelId( NOTIFICATION_CHANNEL_ID ) ;
        assert…