Book Image

Android Studio 3.5 Development Essentials - Java Edition

By : Neil Smyth
Book Image

Android Studio 3.5 Development Essentials - Java Edition

By: Neil Smyth

Overview of this book

Android applications have become an important part of our daily lives and lots of effort goes into developing an Android application. This book will help you to build you own Android applications using Java. Android Studio 3.5 Development Essentials – Java Edition first teaches you to install Android development and test environment on different operating systems. Next, you will create an Android app and a virtual device in Android Studio, and install an Android application on emulator. You will test apps on physical Android devices, then study Android Studio code editor and constraint layout, Android architecture, the anatomy of an Android app, and Android activity state changes. The book then covers advanced topics such as views and widgets implementation, multi-window support integration, and biometric authentication, and finally, you will learn to upload your app to Google Play console and handle the build process with Gradle. By the end of this book, you will have gained enough knowledge to develop powerful Android applications using Java.
Table of Contents (86 chapters)
86
Index

64.3 Understanding Entities

Each database table will have associated with it an entity class. This class defines the schema for the table and takes the form of a standard Java class interspersed with some special Room annotations. An example Java class declaring the data to be stored within a database table might read as follows:

public class Customer {

 

    private int id;

    private String name;

    private string address;

 

    public Customer(String name, String address) {

        this.id = id;

        this.name = name;

        this.address = address;

    }

 

    public int getId() {

        return this.id;

    }

 ...