While the streams API provides a useful way to calculate the sum of some numeric types, BigDecimal is not support. Here we learn how to calculate sums with reduce.
Here's what I've written (so far):
Returning Plain HTML From a Spring MVC Controller
Filed under Spring MVC
Learn how to return HTML from a Spring MVC controller.
Difference Between BeanFactory and ApplicationContext
Filed under Spring
Learn about the significant differences between Spring’s ApplicationContext and BeanFactory with practical examples
How to determine day of week by passing specific date in Java?
Filed under Java
A quick and practical guide to determining the day of the week in Java.
Java Weekly, Issue 327
Filed under Weekly Review
A preview of Kubernetes support coming to Spring Boot 2.3, and a handful of Google Cloud tools to help you build and deploy Spring Boot microservices.
Kotlin Reactive Microservice With Spring Boot
Filed under Kotlin, Reactive, Spring Boot
Learn how to create a microservice application with Kotlin and Spring Boot.
The Clear-Site-Data Header in Spring Security
Filed under Spring Security
Learn how to use Spring Security’s with ClearSiteDataHeaderWriter to add the HTTP Clear-Site-Data response header
Fixing “constant string too long” Build Error
Filed under Java
Learn to fix the “constant string too long” build error in Java.
Prevent ApplicationRunner or CommandLineRunner Beans From Executing During Junit Testing
Learn how to prevent ApplicationRunner or CommandLineRunner beans from executing during JUnit tests.
Gradient Descent in Java
Filed under Algorithms, Data
Learn about Gradient Descent in Java and why backtracking is so important.
Java Weekly, Issue 326
Filed under Weekly Review
An overview of the RSocket request-stream messaging model, and a quick guide to writing a controller for Kubernetes clusters in Java using the Fabric8 API.
Introduction to Lock Striping
Filed under Java
Learn the key differences between coarse-grained synchronization and fine-grained synchronization and how to implement them in Java.
Exploring a Docker Container’s Filesystem
Filed under DevOps
Learn various ways to explore the filesystem of a Docker container
Java IO vs NIO
Filed under Java
Learn about the Java IO and NIO libraries and how they differ.
Spring REST API + OAuth2 + Angular (using the Spring Security OAuth legacy stack)
Filed under Spring Security
Learn how to set up OAuth2 for a Spring REST API and how to consume that from an Angular client.
Keycloak Embedded in a Spring Boot Application
Filed under Security, Spring Boot
Learn how to set up a pre-configured embedded Keycloak server that can be booted up within a Spring Boot application.
L-Trim and R-Trim Alternatives in Java
Filed under Java
Learn several methods how to achieve l-trim and r-trim in java.
IntelliJ – Cannot Resolve Spring Boot Configuration Properties Error
IntelliJ can provide autocomplete and context help for custom properties, but we need to make some additional configuration to our project to enable that.
Compare Two JSON Objects with Gson
Filed under JSON
Comparison of JSON in its string representation is often less effective than comparing it semantically. Here we use Gson to load the JSON and compare the data.
Java Weekly, Issue 325
Filed under Weekly Review
A handful of tips for getting the most out of Java 14 with Spring, and a good overview of the RSocket protocol’s fire-and-forget messaging.
