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In this tutorial, we are going to see how to create a simple Spring Boot project containing a handler that takes the name of the user as a parameter and returns a welcome message. We are then going to deploy it as a serverless application on AWS Lambda and test it. The first step is…

Read More AWS Lambda with Spring Boot – A Simple GreetMe Example

In this tutorial, we are going to see how we can throw custom exceptions with a custom payload in a Spring Boot application and deploy it on AWS as a serverless Lambda function. Let us start by creating a simple Spring boot project. In this project, we are going to create a Request Handler that…

Read More Handle Custom JAVA Exceptions in AWS Lambda with Spring Boot

This tutorial is about creating Lambda functions from Spring Cloud Functions. Spring Cloud Functions provide a way to implement the business logic via functions and decouple code development from the runtime target. Hence, the developer can focus solely on the implementation of logic. The developer need not worry about the target endpoint type, connectivity, integration,…

Read More Create AWS Lambda Functions from Spring Cloud Functions

In this tutorial, we are going to see how we can use the AWS API Gateway as a trigger to an AWS Lambda function. This tutorial requires you to be familiar with building and deploying Serverless Applications with AWS Lambda. Prerequisite: Build and Deploy a Serverless Spring Boot Web Application with AWS Lambda Firstly, add…

Read More Trigger a Lambda Function Using AWS API Gateway

Build and deploy a Serverless Spring Boot Web Application with AWS Lambda This is a tutorial about creating a basic AWS Lambda function in Java using the Spring framework and requires you to have an active AWS account. If you don’t, go ahead and create one. Lambda is the serverless compute service provided by the…

Read More Build and deploy a Serverless Spring Boot Web Application with AWS Lambda

Testing Java with JUnit & Mockito This video course is for beginners and you do not need to have any prior Unit testing knowledge to enrol into this course. The course covers JUnit 5 basics as well as advanced topics. You will also learn to use another very popular testing framework for Java called Mockito.…

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Video tutorials and code examples for Software Developers Find an article with a code example, a video lesson or a complete step-by-step video course. Read More Watch Video What do you want to learn today? Recent Tutorials Dependency Injection and Inversion of Control with Spring Syed Abdul Wahab Spring Boot In this tutorial, we’ll learn…

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The below list of tutorials will help you learn how to test RESTful Web Services with the REST Assured framework. You might want to check the video tutorials page if you are interested in video tutorials. Testing RESTful Web Service API with REST Assured REST Assured HTTP Post Request ( Includes video tutorial ) REST Assured…

Read More Testing RESTful Web Services

In this tutorial, you will learn how to create an instance of @LoadBalanced RestTemplate and make it communicate with an internal microservice. For a step-by-step series of video lessons, please check this page: Spring Boot Microservices and Spring Cloud. Create RestTemplate Bean To create an instance of RestTemplate, you will need to first make sure…

Read More @LoadBalanced RestTemplate Call Internal Microservice

In this tutorial, you will learn how to create a console-based Spring Boot application that you can run in the terminal window on your computer. You will also learn to pass command-line arguments to your Spring Boot console-based application. For more Spring Boot tutorials and video lessons check this page: Spring Boot tutorials and video lessons.…

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This tutorial will teach you how to create a JPA Native SQL Query to only select information from specific columns. You can find many more Spring Data JPA-related tutorials on this site. Some of the most popular tutorials are: One-to-One Mapping Hibernate/JPA Using Spring Boot and MySQL One-to-Many Mapping Hibernate/JPA Using Spring Boot and MySQL…

Read More Select Specific Columns with JPA Native Query

In this blog post, I am going to list commonly used POM.XML dependencies for building RESTful Web services with Spring Boot and Spring MVC. The list of below dependencies is not complete and will depend on the functionality you need your RESTful Web Services to support. But if you are building a simple REST API…

Read More Common POM.XML Dependencies for RESTful Web Services