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java-new-custom-exception

Create a Custom Exception in Java 1. Introduction In this tutorial, we’ll cover how to create a custom exception in Java. We’ll show how user-defined exceptions are implemented and used for both checked and unchecked exceptions. 2. The Need for Custom Exceptions Java exceptions cover almost all general exceptions that… Continue Reading java-new-custom-exception

Posted on: 2019-10-08 2019-11-19
Author: getdocs
Tags: Core Java, Exception
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ubuntu-install-jdk

Installing Java on Ubuntu 1. Overview In this tutorial, we’ll introduce different methods for installing a JDK on Ubuntu. Then, we’ll briefly compare the methods. Finally, we’ll show how to manage multiple Java installations on an Ubuntu system. As a prerequisite to each method, we need an Ubuntu system to… Continue Reading ubuntu-install-jdk

kubernetes-helm

Using Helm and Kubernetes 1. Overview Helm is a package manager for Kubernetes applications. In this tutorial, we’ll understand the basics of Helm and how they form a powerful tool for working with Kubernetes resources. Over the past years, Kubernetes has grown tremendously, and so has the ecosystem supporting it.… Continue Reading kubernetes-helm

java-web-weekly-112

Java Web Weekly 112 At the very beginning of last year, I decided to track my reading habits and share the best stuff here, on Baeldung. Haven’t missed a review since. Here we go… 1. Spring and Java ===== >> JUnit 5 – Setup [codefx.org] A quick intro to what’s… Continue Reading java-web-weekly-112

java-add-hours-date

Add Hours To a Date In Java 1. Overview Before Java 8, java.util.Date was one of the most commonly used classes for representing date-time values in Java. Then Java 8 introduced java.time.LocalDateTime and java.time.ZonedDateTime. Java 8 also allows us to represent a specific time on the timeline using java.time.Instant. In this tutorial,… Continue Reading java-add-hours-date

maven-verifier-plugin

The Maven Verifier Plugin 1. Overview This tutorial introduces the verifier plugin, one of the core plugins of the Maven build tool. For an overview of the other core plugins, refer to this overview article. 2. Plugin Goal The verifier plugin has only one goal – verify. This goal verifies… Continue Reading maven-verifier-plugin

mockmvc-kotlin-dsl

MockMvc Kotlin DSL 1. Overview In this quick tutorial, we’ll have a look at the new Kotlin-specific MockMvc support available in Spring Framework 5.2+. Note: as version 5.2 is not GA yet, we need to use the Spring Milestone repository. 2. The Controller to Test Let’s set up the controller… Continue Reading mockmvc-kotlin-dsl

java-polymorphism

Polymorphism in Java 1. Overview All Object-Oriented Programming (OOP) languages are required to exhibit four basic characteristics: abstraction, encapsulation, inheritance, and polymorphism. In this article, we cover two core types of polymorphism: *static or compile-time polymorphism* and dynamic or runtime *polymorphism*. Static polymorphism is enforced at compile time while dynamic… Continue Reading java-polymorphism

java-copy-constructor

Java Copy Constructor 1. Introduction A copy constructor in a Java class is a constructor that creates an object using another object of the same Java class. That’s helpful when we want to copy a complex object that has several fields, or when we want to make a deep copy… Continue Reading java-copy-constructor

java-8-functional-interfaces

Functional Interfaces in Java 8 1. Introduction This article is a guide to different functional interfaces present in Java 8, their general use cases and usage in the standard JDK library. Further reading: Iterable to Stream in Java The article explains how to convert an Iterable to Stream and why… Continue Reading java-8-functional-interfaces

Posted on: 2019-10-08 2019-11-19
Author: getdocs
Tags: Java 8, Java Streams
Leave a comment: java-8-functional-interfaces