Using a Map for a Hibernate relationship is a bit different than a List. Learn how it’s done.
Here's what I've written (so far):
How to Configure Spring Boot Tomcat
Filed under DevOps, Spring Boot
Learn how to reconfigure the embedded Tomcat server in Spring Boot for some common use cases.
Spring Boot With H2 Database
Filed under Persistence, Spring Boot
Learn how to configure and how to use the H2 database with Spring Boot.
Setting the Log Level in Spring Boot when Testing
Filed under Spring Boot, Testing
For when you need to diagnose test failures by examining more detailed log output, here is how to reconfigure the logging in Spring apps at test time.
Guide to Guava Multiset
Filed under Guava
Store counts of duplicates in a set using Guava Multiset. See how to use this powerful part of the Guava library in single and multi-threaded applications.
JPA @Embedded And @Embeddable
Filed under Persistence
Learn about @Embeddable and @Embedded annotations provided by the Java Persistence API (JPA).
Java Weekly, Issue 277
Filed under Weekly Review
A guide to using coroutines and Kotlin Flow to write non-blocking code in an imperative way with the Spring reactive stack.
InputStream to String in Kotlin
Filed under Kotlin
Learn various ways to read a Kotlin InputStream into a String
JPA Join Types
Filed under Persistence
Explore different join types supported by JPA.
Guide to Spock Extensions
Spock’s extension mechanism allows you to hook into a spec’s lifecycle to modify its behavior
A Quick Guide To Using Cloud Foundry UAA
Learn how to use the Cloud Foundry User Account and Authentication (CF UAA) as an identity management service.
Copying a HashMap in Java
Filed under Java
Learn various techniques for making shallow and deep copies of Java’s HashMap
Guide to Spring Cloud Kubernetes
Filed under DevOps, Spring Cloud
Learn how to install Minikube, setup, and deploy Spring Boot applications to a local Kubernetes environment.
Java Weekly, Issue 276
Filed under Weekly Review
Java 12 has been out of just a few weeks and packing some really cool functionality. We’re looking at the enhanced switch this week – highly useful.
Spring Cloud Data Flow With Apache Spark
Filed under Java
A quick and practical introduction to Spring Cloud Data Flow with Apache Spark.
Reversing a Binary Tree in Java
Filed under Java
A quick and practical guide to reversing a binary tree in Java.
Avoid Check for Null Statement in Java
Filed under Java
Learn several strategies for avoiding the all-too-familiar boilerplate conditional statements to check for null values in Java.
Cannot Reference “X” Before Supertype Constructor Has Been Called
Filed under Java
Find out why the compiler will not let you call an instance method too early in a constructor and what you can do to fix it.
EnvironmentPostProcessor in Spring Boot
Filed under Spring Boot
Learn how to use the EnvironmentPostProcessor to customize the application’s Environment before application context is refreshed.
A Guide to jBPM with Java
Filed under Library
Learn about the Business Process Management (BPM) System and its implementation in Java as jBPM System.