Java end to end application

Java EE 7 Essentials by Arun Gupta

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Chapter 16. Build an End-to-End Application

Introduction

This chapter provides self-paced instructions for building a typical three-tier end-to-end application using the following Java EE 7 technologies:

• Java Persistence API 2.1
• Java API for RESTful Web Services 2.0
• Java Message Service 2.0
• JavaServer Faces 2.2
• Contexts and Dependency Injection 1.1
• Bean Validation 1.1
• Batch Applications for the Java Platform 1.0
• Java API for JSON Processing 1.0
• Java API for WebSocket 1.0
• Java Transaction API 1.2

Software Requirements

You need to download and install the following software:

1. JDK 7
2. NetBeans 7.4 or higher (All or Java EE version)Figure 16-1 shows a preview of the downloads page and highlights the exact Download button to click.

Problem Statement

This hands-on lab builds a typical three-tier Java EE 7 web application that allows customers to view the show times for a movie in a seven-theater cineplex and make reservations. Users can add new movies and delete existing movies. Customers can discuss the movie in a chat room. Total sales from each showing are calculated at the end of the day. Customers also accrue points for watching movies.

Figure 16-2 shows the key components of the application. The User Interface initiates all the .

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An complete example of a pipeline focusing on API and UI (mobile and web) tests.

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README.md

Automatically Testing an End-to-End Java Application

HTML files that you must to put in your application server. service.js file on js folder is pointing to a local API. If you need to change the server and port, changhe this on the file: http://localhost:4567/api/v1/person/:id

The backend app is running on a MySQL server, so you need to create the database before any execution throught database.sql file.

The mobile front-end built on Android Studio. The app is pointing to the local service, but here the IP address is not localhost, it is 10.0.3.2 and you can change it on APIEndpointsInterface.java class. Just notice that this IP adress works locally only on Genymotion emulator. For Android AVD you must set the IP 10.0.2.2 or your computer IP if you run on a real device.

The backend app. It’s a REST service created with Java Spark. This is a CRUD app with MySQL database

The test project that contains all the test scripts for API, Web and Mobile Tests

Repositiry for two presentations at JavaOne 2017

• Java Test Automation for REST, Web, and Mobile [CON6070]
• Trust Your Pipeline: Automatically Testing an End-to-End Java Application [CON6121]

About

An complete example of a pipeline focusing on API and UI (mobile and web) tests.

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Complete End to End Java Tutorial with Singleton Object Employee, Crunchify Java POJO and Detailed TestCase

In this Java Tutorial we will go over all detailed steps required for you to use Singleton pattern in your Enterprise Project. We use Singleton object to push required data at runtime and we use the same Singleton object to retrieve data at runtime. You could access Singleton object from anywhere. If you want to learn more about Singleton Pattern the follow this Singleton tutorial.

Let’s get started

Step-1

Create simple Crunchify Object POJO: CrunchifyObject.java

Step-2

Create all setters and getters.

Step-3

Create Singleton Class: CrunchifySingleton.java

Step-4

Write all utility methods into Singleton class

Step-5

Finally create Test Class: CrunchifyObjectTest.java

You need below JSON dependency:

CrunchifyObject.java

package crunchify.com.tutorial; import java.util.List; /** * @author Crunchify.com * This is simple CrunchifyObject POJO contains another class "Employee" as a field */ public class CrunchifyObject < public String name; public String address; public Listemployees; public String getName() < return name; >public void setName(String name) < this.name = name; >public String getAddress() < return address; >public void setAddress(String address) < this.address = address; >public List getEmployees() < return employees; >public void setEmployees(List employees) < this.employees = employees; >// Class Employee public class Employee < public String firstName; public String lastName; public int phoneNumber; public String getFirstName() < return firstName; >public void setFirstName(String firstName) < this.firstName = firstName; >public String getLastName() < return lastName; >public void setLastName(String lastName) < this.lastName = lastName; >public int getPhoneNumber() < return phoneNumber; >public void setPhoneNumber(int phoneNumber) < this.phoneNumber = phoneNumber; >> >

CrunchifySingleton.java

package crunchify.com.tutorial; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import org.json.JSONArray; import org.json.JSONObject; import crunchify.com.tutorial.CrunchifyObject.Employee; /** * @author Crunchify.com * This is Singleton class used to access from any where from your project. Here we are using it * from CrunchifyObjectTest.java * */ public class CrunchifySingleton < private Listemployees = new ArrayList(); private static CrunchifySingleton singletonInstance = null; private CrunchifyObject crunchify = new CrunchifyObject(); public static CrunchifySingleton getCrunchifySingletonInstance() < if (singletonInstance == null) < singletonInstance = new CrunchifySingleton(); >return singletonInstance; > public void addEmployee(Employee employee) < synchronized (employees) < employees.add(employee); >> public List getEmployee() < return employees; >public void addCrunchify(CrunchifyObject crunchify) < synchronized (crunchify) < this.crunchify = crunchify; >> public String getCrunchifyObject() < JSONObject obj = new JSONObject(); obj.put("name", crunchify.getName()); obj.put("address", crunchify.getAddress()); JSONArray employeeJson = new JSONArray(); for (Employee emp : employees) < MapemployeeData = new HashMap(); employeeData.put("firstName", emp.getFirstName()); employeeData.put("lastName", emp.getLastName()); employeeData.put("phoneNumber", emp.getPhoneNumber() + ""); employeeJson.put(employeeData); > obj.put("employees", employeeJson); return obj.toString(); > >

CrunchifyObjectTest.java

package crunchify.com.tutorial; import crunchify.com.tutorial.CrunchifyObject.Employee; /** * @author Crunchify.com * This is test class used to create all required objects and use Singleton object to push and * retrieve value at runtime. You could use the same singleton object from anywhere in your enterprise project */ public class CrunchifyObjectTest < static CrunchifySingleton instance = CrunchifySingleton.getCrunchifySingletonInstance(); public static void main(String[] args) < populateAndSaveDataFromSingletonObject(); retrieveDataFromSingletonObject(); >private static void retrieveDataFromSingletonObject() < String result = instance.getCrunchifyObject(); System.out.println(result); >private static void populateAndSaveDataFromSingletonObject() < // Create CrunchifyObject CrunchifyObject crunchifyObj = new CrunchifyObject(); crunchifyObj.setName("Crunchify.com"); crunchifyObj.setAddress("NYC - US"); // Create Employee1 Employee emp1 = crunchifyObj.new Employee(); emp1.setFirstName("Mike"); emp1.setLastName("Rose"); emp1.setPhoneNumber(1222222222); // Create Employee2 Employee emp2 = crunchifyObj.new Employee(); emp2.setFirstName("app"); emp2.setLastName("shah"); emp2.setPhoneNumber(1333333333); // Create Employee3 Employee emp3 = crunchifyObj.new Employee(); emp3.setFirstName("Dexter"); emp3.setLastName("My"); emp3.setPhoneNumber(1444444444); // Add all Employee Object to CrunchifySingleton object instance.addEmployee(emp1); instance.addEmployee(emp2); instance.addEmployee(emp3); // Add Employees to CrunchifyObject crunchifyObj.setEmployees(instance.getEmployee()); // Now finally add CrunchifyObject to same CrunchifySingleton object which will use to retrieve all data instance.addCrunchify(crunchifyObj); >>

Result:

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