Notification notification= new NotificationCompat.Builder(this,"myapp")

این خط رو زیرش قرمز میکنه و وقتی کرسر روش قرار میدم این ارور نشون میده

cannot resolve constructor 'Builder(anonymous android.view.View.OnClickListner,java.lang.String)'

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package com.sevenlearn.notification_tutorial2;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.NotificationCompat;

import android.app.Notification;
import android.app.NotificationManager;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {
    private View v;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        v=findViewById(R.id.button);
        v.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Notification notification= new NotificationCompat.Builder(this,"myapp")
                        .setSmallIcon(android.R.drawable.stat_notify_chat)
                        .setLargeIcon(BitmapFactory.decodeResource(getResources(),R.mipmap.ic_launcher))
                        .setContentTitle("My Notification")
                        .setContentText("this is my first notification ")
                        .build();
                NotificationManager notificationManager=getSystemService()
            }
        });


    }



}

-----------------------

package com.sevenlearn.notification_tutorial2;

import android.app.Application;
import android.app.NotificationChannel;
import android.app.NotificationManager;

public class App extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        NotificationManager notificationManager= (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        NotificationChannel notificationChannel= new NotificationChannel("myApp","defaultChannel",NotificationManager.IMPORTANCE_HIGH);
        notificationChannel.setDescription("test");
        if (notificationManager!=null)
        notificationManager.createNotificationChannel(notificationChannel);
    }
}