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Self-Hosted Monitoring For Spring Boot Applications 1. Introduction One of the many great features of Spring Boot is the set of built-in actuators. These actuators provide an easy way to monitor and control just about every aspect of a Spring Boot application. In this tutorial, we’ll look at using the… Continue Reading spring-boot-self-hosted-monitoring
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The strictfp Keyword in Java 1. Introduction By default, the floating-point computations in Java are platform-dependent. And so, the floating-point outcome’s precision depends on the hardware in-use. In this tutorial, we’ll learn how to use strictfp in Java to ensure platform-independent floating-point computations. 2. strictfp Usage We can use the… Continue Reading java-strictfp
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Adding an Element to a Java Array vs an ArrayList 1. Overview In this tutorial, we’ll briefly look at the similarities and dissimilarities in memory allocation between Java arrays and ArrayList. Furthermore, we’ll see how to append and insert elements in an array and ArrayList. [[java arrays and arraylist]] ===… Continue Reading java-add-element-to-array-vs-list
Causes and Avoidance of java.lang.VerifyError 1. Introduction In this tutorial, we’ll look at the cause of java.lang.VerifyError errors and multiple ways to avoid it. 2. Cause The Java Virtual Machine (JVM) distrusts all loaded bytecode as a core tenet of the Java Security Model. During runtime, the JVM will load .class… Continue Reading java-lang-verifyerror
Mocking a WebClient in Spring 1. Overview These days, we expect to call REST APIs in most of our services. Spring provides a few options for building a REST client, and WebClient is recommended. In this quick tutorial, we will look at how to unit test services that use WebClient… Continue Reading spring-mocking-webclient
Converting Java Date to OffsetDateTime 1. Introduction In this tutorial, we learn about the difference between Date and OffsetDateTime. We also learn how to convert from one to the other. 2. Difference between Date and OffsetDateTime OffsetDateTime was introduced in JDK 8 as a modern alternative to java.util.Date. OffsetDateTime is a… Continue Reading java-convert-date-to-offsetdatetime
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Java Weekly, Issue 306 1. Spring and Java ===== >> Azure Spring Cloud Is Now In Public Preview [spring.io] A quick look at the Azure runtime platform for Spring Boot and Spring Cloud, developed jointly by Microsoft and Pivotal. Very cool! >> Java Feature Spotlight: Local Variable Type Inference [infoq.com]… Continue Reading java-weekly-306
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Practical Application of Test Pyramid in Spring-based Microservice 1. Overview In this tutorial, we’ll understand the popular software-testing model called the test pyramid. We’ll see how it’s relevant in the world of microservices. In the process, we’ll develop a sample application and relevant tests to conform to this model. In… Continue Reading spring-test-pyramid-practical-example
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Scanner nextLine() Method 1. Overview In this quick tutorial, we’ll briefly look at the nextLine() method of java.util.Scanner class, of course with a focus of learning how to use it in practice. [[nextLine method]] === 2. Scanner.nextLine() [[nextLine method]]The nextLine() method of the java.util.Scanner class scans from the current position… Continue Reading java-scanner-nextline
Intro to Spring Data Geode 1. Overview Apache Geode provides data management solutions through a distributed cloud architecture. It would be ideal to utilize the Spring Data APIs for the data access through the Apache Geode server. In this tutorial, we’ll explore Spring Data Geode for the configuration and development… Continue Reading spring-data-geode
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