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JPA Query Parameters Usage 1. Introduction Building queries using JPA is not difficult; however, we sometimes forget simple things that make a huge difference. One of these things is JPA query parameters, and this is what we are going to talk about. 2. What Are Query Parameters? Let’s start by… Continue Reading jpa-query-parameters
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The Baeldung Weekly Review 36 At the very beginning of 2014 I decided to start to track my reading habits and share the best stuff here, on Baeldung. Curating my reading has made it more purposeful and diverse – and I’m hopefully providing value to you as well by allowing… Continue Reading 2014-week-review-36
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String toLowerCase and toUpperCase Methods in Java 1. Overview In this tutorial, we’ll cover the toUpperCase and toLowerCase methods included in the Java String class. We’ll start by creating a String called name: String name = “John Doe”; 2. Convert to Uppercase To create a new uppercase String based on… Continue Reading java-string-convert-case
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“REST With Spring” is Live 10 minutes ago I pushed out the “go-live” announcement of the Master Class of REST With Spring – and I’ve been watching the signup emails as they’re hitting my inbox. And the cool thing is that I recognize some of the names – these are… Continue Reading rest-with-spring-is-live
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Map of Primitives in Java 1. Overview In this tutorial, we’ll learn how to construct a map with primitive keys and values. As we know, the core Java Maps don’t allow storage of primitive keys or values. That’s why we’ll introduce a number of external third-party libraries which provide primitive… Continue Reading java-map-primitives
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Spring REST API + OAuth2 + Angular Spring Security OAuth 1. Overview In this tutorial, we’ll secure a REST API with OAuth and consume it from a simple Angular client. The application we’re going to build out will consist of four separate modules: Authorization Server Resource Server UI implicit –… Continue Reading rest-api-spring-oauth2-angularjs
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Overview and Need for DelegatingFilterProxy in Spring 1. Overview The DelegatingFilterProxy is a servlet filter that allows passing control to Filter classes that have access to the Spring application context. Spring Security relies on this technique heavily. In this tutorial, we’ll cover it in detail. 2. DelegatingFilterProxy The Javadoc for DelegatingFilterProxy states that… Continue Reading spring-delegating-filter-proxy
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Escape JSON String in Java 1. Overview In this short tutorial, we’ll show some ways to escape a JSON string in Java. We’ll take a quick tour of the most popular JSON-processing libraries and how they make escaping a simple task. 2. What Could Go Wrong? Let’s consider a simple yet… Continue Reading java-json-escaping
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Intro to Google Cloud Storage with Java 1. Overview Google Cloud Storage offers online storage tailored to an individual application’s needs based on location, the frequency of access, and cost. Unlike Amazon Web Services, Google Cloud Storage uses a single API for high, medium, and low-frequency access. Like most cloud… Continue Reading java-google-cloud-storage
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Using Java MappedByteBuffer 1. Overview In this quick article, we’ll be looking at the MappedByteBuffer in the java.nio package. This utility can be quite useful for efficient file reads. 2. How MappedByteBuffer Works When we’re loading a region of the file, we can load it to the particular memory region… Continue Reading java-mapped-byte-buffer
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