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Guide to DelayQueue 1. Overview In this article, we’ll be looking at the DelayQueue construct from the java.util.concurrent package. This is a blocking queue that could be used in producer-consumer programs. It has a very useful characteristic – when the consumer wants to take an element from the queue, they… Continue Reading java-delay-queue
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The Guide to RestTemplate 1. Overview In this tutorial, we’re going to illustrate the broad range of operations where the Spring REST Client – RestTemplate – can be used, and used well. For the API side of all examples, we’ll be running the RESTful service from here. Further reading: Basic… Continue Reading rest-template
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Multi Dimensional ArrayList in Java 1. Overview Creating a multidimensional ArrayList often comes up during programming. In many cases, there is a need to create a two-dimensional ArrayList or a three-dimensional ArrayList. In this tutorial, we’ll discuss how to create a multidimensional ArrayList in Java. 2. Two-Dimensional ArrayList Suppose we want to represent… Continue Reading java-multi-dimensional-arraylist
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Find Substrings That Are Palindromes in Java 1. Overview In this quick tutorial, we’ll go through different approaches to finding all substrings within a given string that are palindromes. We’ll also note the time complexity of each approach. 2. Brute Force Approach In this approach, we’ll simply iterate over the… Continue Reading java-palindrome-substrings
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Intro to JaVers 1. Overview In this article, we will be looking at the JaVers library. This library helps programmers examine and detect changes in the states of simple Java objects. When we use mutable objects in our code, every object can potentially be modified in various places in the… Continue Reading javers
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Baeldung Weekly Review 25 At the very beginning of 2014 I decided to track my reading habits and share the best stuff here, on Baeldung. 2014 has been quite the year, covering each week with a review. I’ve been doing a lot more reading to make sure I cover and… Continue Reading 2015-week-review-25
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Anonymous Classes in Java 1. Introduction In this tutorial, we’ll consider anonymous classes in Java. We’ll describe how we can declare and create instances of them. We’ll also briefly discuss their properties and limitations. 2. Anonymous Class Declaration Anonymous classes are inner classes with no name. Since they have no… Continue Reading java-anonymous-classes
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Java – Rename or Move a File 1. Overview In this quick tutorial, we’re going to look at renaming / moving a File in Java – first using JDK 6, then JDK 7 with NIO, Google Guava and finally the Apache Commons IO library. This article is part of the… Continue Reading java-how-to-rename-or-move-a-file
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LIKE Queries in Spring JPA Repositories 1. Introduction In this quick tutorial, we’re going to cover various ways of creating LIKE queries in Spring JPA Repositories. We’ll start by looking at the various keywords we can use while creating query methods. Then, we’ll cover the @Query annotation with named and… Continue Reading spring-jpa-like-queries
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A Guide to JGit 1. Introduction JGit is a lightweight, pure Java library implementation of the Git version control system – including repository access routines, network protocols, and core version control algorithms. JGit is a relatively full-featured implementation of Git written in Java and is widely used in the Java… Continue Reading jgit
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