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Introduction to Morphia – Java ODM for MongoDB 1. Overview In this tutorial, we’ll understand how to use Morphia, an Object Document Mapper (ODM) for MongoDB in Java. In the process, we’ll also understand what is an ODM and how it facilitates working with MongoDB. 2. What is an ODM?… Continue Reading mongodb-morphia
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Java @Deprecated Annotation 1. Overview In this quick tutorial, we’ll have a look at deprecated APIs in Java and how to use the @Deprecated annotation. 2. The @Deprecated Annotation As a project evolves, its API changes. Over time, there are certain constructors, fields, types or methods that we don’t want people… Continue Reading java-deprecated
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A Guide To Logback 1. Overview Logback is one of the most widely used logging frameworks in the Java Community. It’s a replacement for its predecessor, Log4j. Logback offers a faster implementation than Log4j, provides more options for configuration, and more flexibility in archiving old log files. This introduction will… Continue Reading logback
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Create a Sudoku Solver in Java 1. Overview In this article, we’re going to look at Sudoku puzzle and algorithms used for solving it. Next, we’ll implement solutions in Java. The first solution will be a simple brute-force attack. The second will utilize the Dancing Links technique. Let’s keep in… Continue Reading java-sudoku
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Guide to Guava Multiset 1. Overview In this tutorial, we’ll explore one of the Guava collections – Multiset. Like a java.util.Set, it allows for efficient storage and retrieval of items without a guaranteed order. However, unlike a Set, it allows for multiple occurrences of the same element by tracking the… Continue Reading guava-multiset
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Java @Override Annotation 1. Overview In this quick tutorial, we’ll have a look at how to use the @Override annotation. 2. @Override Annotation In a subclass, we can override or overload instance methods. Overriding indicates that the subclass is replacing inherited behavior. Overloading is when a subclass is adding new… Continue Reading java-override
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Generating Prime Numbers in Java 1. Introduction In this tutorial, we’ll show various ways in which we can generate prime numbers using Java. If you’re looking to check if a number is prime – here’s a quick guide on how to do that. 2. Prime Numbers Let’s start with the… Continue Reading java-generate-prime-numbers
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Spring Data – CrudRepository save() Method 1. Overview CrudRepository is a Spring Data interface for generic CRUD operations on a repository of a specific type. It provides several methods out of the box for interacting with a database. In this tutorial, we’ll explain how and when to use the CrudRepository… Continue Reading spring-data-crud-repository-save
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Java Web Weekly 110 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 ===== >> Q&A with Aleksey Shipilev on Compact Strings Optimization in OpenJDK… Continue Reading java-web-weekly-110
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Java Weekly, Issue 198 1. Spring and Java ===== >> JUnit 5 Tutorial: Writing Nested Tests [petrikainulainen.net] Hierarchical tests were sometimes entirely missing in the old JUnit. >> Benchmarking JDK String.replace() vs Apache Commons StringUtils.replace() [blog.jooq.org] It turns out that String.replace() uses the Pattern class internally – which results in… Continue Reading java-weekly-198
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