In this blog post, I will share how to create a very simple RESTful Spring Boot Web Service that uses Spring Data JPA to save information to a database. Our Web Service will accept HTTP Post requests with user details and then save these user details into MySQL Database using Spring Data JPA CrudRepository. For code…
Read More Spring Boot REST and JPA – Save to a DatabaseIn this tutorial, you will learn how to create a simple Web Service Project with Spring Boot Intializr and then build and run it. After creating the web service project, we will add additional functionality. So, let’s get started. Multiple Ways to Create a Spring Boot Web Service Project There are three different ways to…
Read More Create a Web Service Project with Spring Boot InitializrIn this blog post, I am going to share with you how to configure Spring Data JPA in a Jersey 2 Container Deployable Web App. Spring Data JPA makes it much easier and more convenient to persist and read data from the database and when I needed to tie together Spring Data JPA and Jersey 2 Web…
Read More Configure Spring Data JPA in Jersey 2 JAX-RS AppWith this blog post, I am going to share what I needed to do to make JPA work in my Jersey 2 Web Services App. I have created my Jersey 2 app using the following maven snippet: mvn archetype:generate -DarchetypeGroupId=org.glassfish.jersey.archetypes \ -DarchetypeArtifactId=jersey-quickstart-webapp -DarchetypeVersion=2.26 I then opened pom.xml and added a few new dependencies which I…
Read More Configuring JPA in Jersey 2 Web AppAdding dependency injection support into Jersey 2 Web Services application that uses HK2 is not very straightforward. So, I created this page to document things I needed to do in my Jersey 2 RESTful Web Services app to make the Dependency Injection work. Hope you will find it useful. Create a new class that extends AbstractBinder. This…
Read More Dependency Injection with HK2 in Jersey and JAX-RSCreate a Servlet Container deployable Jersey web application Create new Jersey web application using Maven. The project created with the below jersey-quickstart-webapp archetype can be built and deployed to a servlet container like for example Apache Tomcat. mvn archetype:generate -DarchetypeGroupId=org.glassfish.jersey.archetypes \ -DarchetypeArtifactId=jersey-quickstart-webapp -DarchetypeVersion=2.26 POM.XML Dependency to Support JSON To support JSON in your Jersey Web App add…
Read More RESTful Web Services with Jersey and Spring Data JPA – Cheat SheetRecently I have published a video course that teaches how to use Java JAX-RS to create a RESTful Web Service for your mobile application and how implement features like user Sign up, Sing in and how to communicate with protected Web Service Endpoints. I would love it if you check it out and hopefully like it, find…
Read More Deploy Web Application Archive(WAR) to Amazon AWS EC2 Linux InstanceIn this Kotlin programming tutorial I will share with you how to use ListView to display list of images. In my example below I will use image as an element in a ListView, but this can be any other UI element or even a view with other elements on it. Also, this example uses images…
Read More ListView of Images Example in KotlinIn this Kotlin programming tutorial I am going to share with you how to load image from a remote URL in Kotlin using Glide. Glide is probably the easiest and the most efficient way to load image to an ImageView. You can use Glide to load a local image and well as an image hosted on a remote…
Read More Load Image From a Remote URL with Kotlin and GlideIn this tutorial on Firebase and Kotlin, we will learn how to use Firebase Social Authentication API to implement User Registration feature and store user data in Firebase and then allow user to login into our mobile app using their social accounts for either Google, Twitter or Facebook. We will also learn how to fetch some user specific…
Read More Firebase Social Authentication. Example in Kotlin.In this short Kotlin programming tutorial we will learn how to create a Switch in Kotlin programmatically. In the code example below we are going to cover: Create Switch and add it to a LinearLayout Get input from the Switch when it’s state is changed Set textOff and textOn text programmatically Set OnClickListener on the…
Read More Create a Switch in Kotlin ProgrammaticallyIn this Kotlin programming tutorial I am going to share with you how to create a RadioButton in Kotlin programmatically. We will create RadioGroup of 5 radio buttons with one set as default and when the view is loaded the default RadioButton will be selected. You will also learn how to create a RadioButton which…
Read More RadioButton Example in KotlinIn this short Kotlin programming tutorial I am going to share with you how to create a CheckBox in Kotlin programmatically. You will learn how to create two checkboxes and how to read a value from CheckBox when it is selected. The code example below with cover: Create CheckBox in Kotlin programmatically, Use setOnClickListener to know when check…
Read More Create Checkbox in Kotlin ProgrammaticallyIn this short Kotlin tutorial I am going to share with you how to create a TimePicker in Kotlin programmatically and how to update text label when the value of Hours or Minutes has changed. The below code example will cover: Create TimePicker and add it to LinearLayout Get input from TimePicker when user changes the value…
Read More Create TimePicker in Kotlin ProgrammaticallyWith this tutorial I wanted to share with you how to configure your Java project and it’s hibernate configuration file hibernate.cfg.xml to use a more professional and production ready connection pool provider C3P0. Hibernate’s internal connection pooling algorithm is rudimentary, and is provided for development and testing purposes. In my earlier blog posts I used…
Read More Configure Hibernate to Use C3P0 Connection Pool