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ZoneOffset in Java 1. Introduction In our world, each country follows a certain time-zone. These time-zones are crucial for expressing time conveniently and effectively. However, time-zones can sometimes be inexplicit due to variables such as daylight saving time, coming into the picture. Moreover, while representing these time-zones in our code,… Continue Reading java-zone-offset
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Static Content in Spring WebFlux 1. Overview Sometimes, we have to serve static content in our web applications. It might be an image, HTML, CSS, or a JavaScript file. In this tutorial, we’ll show how to serve static content using Spring WebFlux. We also assume that our web application will be… Continue Reading spring-webflux-static-content
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Retrieve User Information in Spring Security 1. Overview This article will show how to retrieve the user details in Spring Security. The currently authenticated user is available through a number of different mechanisms in Spring – let’s cover the most common solution – programmatic access, first. Further reading: Keep Track… Continue Reading get-user-in-spring-security
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Negate a Predicate Method Reference with Java 11 1. Overview In this short tutorial, we’ll see how to negate a Predicate method reference using Java 11. We’ll start with the limitations encountered in order to achieve this before Java 11. Then we’ll see how the Predicate.not() method helps, as well. 2. Before… Continue Reading java-negate-predicate-method-reference
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Convert String to Byte Array and Reverse in Java 1. Introduction We frequently need to convert between String and byte array in Java. In this tutorial, we’ll examine these operations in detail. First, we’ll look at various ways to convert a String to a byte array. Then, we’ll look at similar… Continue Reading java-string-to-byte-array
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Introduction to RESTX 1. Overview In this tutorial, we’ll be taking a tour of the lightweight Java REST framework RESTX. 2. Features Building a RESTful API is quite easy with the RESTX framework. It has all the defaults that we can expect from a REST framework like serving and consuming JSON, query… Continue Reading java-restx
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Sorting Query Results with Spring Data 1. Introduction In this tutorial, we’re going to learn how to sort query results with Spring Data. First, we’ll take a look at the schema of the data that want to query and sort. And then, we’ll dive right into how to achieve that… Continue Reading spring-data-sorting
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Dynamic Mapping with Hibernate 1. Introduction In this article, we’ll explore some dynamic mapping capabilities of Hibernate with the @Formula, @Where, @Filter and @Any annotations. Note that although Hibernate implements the JPA specification, annotations described here are available only in Hibernate and are not directly portable to other JPA implementations.… Continue Reading hibernate-dynamic-mapping
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Spring RestTemplate Error Handling 1. Overview In this short tutorial, we’ll discuss how to implement and inject the ResponseErrorHandler interface in a RestTemplate instance – to gracefully handle HTTP errors returned by remote APIs. 2. Default Error Handling By default, the RestTemplate will throw one of these exceptions in case of… Continue Reading spring-rest-template-error-handling
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The @ServletComponentScan Annotation in Spring Boot 1. Overview In this article, we’ll go through the new @ServletComponentScan annotation in Spring Boot. The aim is to support the following Servlet 3.0 annotations: javax.servlet.annotation.WebFilter javax.servlet.annotation.WebListener javax.servlet.annotation.WebServlet @WebServlet, @WebFilter, and @WebListener annotated classes can be automatically registered with an embedded Servlet container by… Continue Reading spring-servletcomponentscan
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