How to Get Screen Dimensions as Pixel 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/txtDimensions"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginStart="20dp"
        android:layout_marginTop="116dp"
        android:layout_marginEnd="20dp"
        android:textAlignment="center"
        android:textSize="18sp"
        android:textStyle="bold"
        android:text="Screen Dimensions in Android"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="1.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/txtTitle" />

    <TextView
        android:id="@+id/txtDimensionsValue"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginStart="20dp"
        android:layout_marginTop="76dp"
        android:layout_marginEnd="20dp"
        android:textAlignment="center"
        android:textSize="18sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/txtDimensions" />

 </androidx.constraintlayout.widget.ConstraintLayout>

 import android.graphics.Point;
 import android.os.Bundle;
 import android.view.Display;
 import android.widget.TextView;
 import androidx.appcompat.app.AppCompatActivity;

 public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_two);

        // create dimension object
        TextView txtDimensions = findViewById(R.id.txtDimensionsValue);

        //object of Display class
        Display display = getWindowManager().getDefaultDisplay();

        //object of Point
        Point size = new Point();

        //set side of point object
        display.getSize(size);

        //set size of width of screen
        int width = size.x;

        //set size of height of screen
        int height = size.y;

        //set dimension value
        String dimensions = "Width : " + width + " px\n" + "Height : " + height + " px";

        //getting vlaue set on textview
        txtDimensions.setText(dimensions);

    }

 }