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Convert Time to Milliseconds in Java 1. Overview In this quick tutorial, we’ll illustrate multiple ways of converting time into Unix-epoch milliseconds in Java. More specifically, we’ll use: Core Java’s java.util.Date and Calendar Java 8’s Date and Time API Joda-Time library 2. Core Java ==== 2.1. Using Date Firstly, let’s… Continue Reading java-time-milliseconds
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A Guide to the JSTL Library 1. Overview JavaServer Pages Tag Library (JSTL) is a set of tags that can be used for implementing some common operations such as looping, conditional formatting, and others. In this tutorial, we’ll be discussing how to setup JSTL and how to use its numerous… Continue Reading jstl
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The Baeldung Weekly Review 33 At the very beginning of 2014 I decided to start better documenting my reading habits and sharing them here with all of you. The point is two fold – by curating and documenting, my reading has become more purposeful and diverse. Also – I believe… Continue Reading 2014-week-review-33
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The Baeldung Weekly Review 8 On Spring Lots of Spring releases this week: ⇒ Spring Data Release Train Codd Goes GA – This was quite a sustained effort from the Spring Data team, with Release Candidates and Service Releases flying left and right during the last few weeks. Nice to… Continue Reading 2014-week-review-8
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Transactions with Spring and JPA 1. Overview This tutorial will discuss the right way to configure Spring Transactions, how to use the @Transactional annotation and common pitfalls. For a more in-depth discussion on the core persistence configuration, check out the Spring with JPA tutorial. Basically, there are two distinct ways… Continue Reading transaction-configuration-with-jpa-and-spring
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Get a Random Number in Kotlin 1. Introduction This short tutorial will demonstrate how to generate a random number using Kotlin. 2. Random number using java.lang.Math The easiest way to generate a random number in Kotlin is to use java.lang.Math. Below example will generate a random double number between 0 and… Continue Reading kotlin-random-number
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Finding the Difference Between Two Strings in Java 1. Overview This quick tutorial will show how to find the difference between two strings using Java. For this tutorial, we’re going to use two existing Java libraries and compare their approaches to this problem. 2. The Problem Let’s consider the following… Continue Reading java-difference-between-two-strings
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Spring Boot With SQLite 1. Overview In this quick tutorial, we’ll go through steps to use an SQLite database in a JPA-enabled Spring Boot application. Spring Boot supports a few well known in-memory databases out of the box, but SQLite requires a bit more from us. Let’s have a look… Continue Reading spring-boot-sqlite
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wait and notify() Methods in Java 1. Introduction In this article, we’ll look at one of the most fundamental mechanisms in Java – thread synchronization. We’ll first discuss some essential concurrency-related terms and methodologies. And we’ll develop a simple application – where we’ll deal with concurrency issues, with the goal… Continue Reading java-wait-notify
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Registration with Spring Security – Password Encoding 1. Overview This article discusses a critical part of the registration process – password encoding – basically not storing the password in plaintext. There are a few encoding mechanism supported by Spring Security – and for the article we’ll use BCrypt, as it’s… Continue Reading spring-security-registration-password-encoding-bcrypt
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