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How to index in SolrJ

If you want to index information (a document) in Solr. Indexing is also simple using SolrJ. Users build the documents they want to index as instances of SolrInputDocument and provide them as arguments to one of the add() methods on SolrClient. The

Jan 14, 2025 pm 02:11 PM

JSON Diff: Comparing and Identifying Changes in JSON Data

JSON (JavaScript Object Notation) has become a widely used data format for transmitting and storing structured data, especially in web development. However, comparing two JSON files or structures can often be challenging, particularly when dealing wi

Jan 14, 2025 pm 02:03 PM

Java interacting with Apache Avro

This Java-Avro Sample demonstrates how we setup a POJO and then save the info into an Avro file to later by created as a GenericRecord instance. Ultimately, this is verified by using the assertion assert True as the sample shows us.

Jan 14, 2025 pm 12:08 PM

Builder references

Reference to a constructor uses the syntax: classname::new. It can be assigned to a functional interface that has a constructor-compatible method. Example with Parameterized Constructor If the functional interface has a method with a parameter

Jan 14, 2025 am 10:08 AM

Building and Deploying Your First Java App with Docker in Just inutes

Let's create a simple java app which returns text and available on port 1800 of your local environment using Docker container in 5 minutes (depends on your internet connection speed). You can always grab the full source code from my public reposito

Jan 14, 2025 am 09:42 AM

Method references

Concept: A method reference allows you to reference a method without executing it. Relationship with lambda expressions: Both require a target type context composed of a compatible functional interface. Functional instance: A method reference

Jan 14, 2025 am 08:56 AM

Secrets of Java&#s String Pool

1. Introduction to Java's String Pool In Java, strings are a fundamental part of programming. The String Pool, also known as the String Intern Pool, is a special memory area where Java stores string literals to optimize memory usage. This conce

Jan 14, 2025 am 08:33 AM

Predefined functional interfaces

The previous examples used manually defined functional interfaces to illustrate the basic concepts. However, JDK 8 introduced the java.util.function package, which provides predefined functional interfaces for ease of use. Package now

Jan 14, 2025 am 08:18 AM

Pros and Cons of ays to Instantiate Objects: Telescope Pattern, JavaBeans, and Builder Pattern

Instantiating objects is an essential activity in object-oriented programming. There are various ways to achieve this, each with its characteristics, advantages, and disadvantages. In this post, we will explore three popular approaches: Telescope Pat

Jan 13, 2025 pm 10:13 PM

Static variables in Java

Static vs Instance Variables Whenever a variable is declared as static, this means there is only one copy of it for the entire class, rather than each instance having its own copy. Static variable When a static variable is declared, a single

Jan 13, 2025 pm 06:05 PM

Converting JPA entities to Mendix

Recently while exploring Mendix, I've noticed they had a Platform SDK which allows you to interact with the mendix app model through an API. This gave me an idea to explore if it can be used to create our domain model. Specifically, to create a doma

Jan 13, 2025 pm 06:04 PM

Mastering Java: A Beginner&#s Guide to Building Robust Applications

Introduction Java is one of the most popular programming languages in the world, renowned for its versatility, robustness, and cross-platform capabilities. Whether you’re building enterprise-level applications, Android apps, or backend systems, Java

Jan 13, 2025 am 11:52 AM

Recursion: Concepts, Components, and Practical Applications — Java

This article explains the concept of recursion in programming. It describes its key components: the base case and the recursive case. Using a Java example, it illustrates how recursion is implemented and emphasizes safeguards to prevent infinite loop

Jan 13, 2025 am 10:44 AM

I Surveyed the Top Backend Frameworks Here&#s What I Found

While creating a new project one of the main things that clouds your mind is what framework you are going to use. Every framework has its own drawbacks and advantages we will be measuring these in this article. The project I'm working on is called

Jan 13, 2025 am 08:20 AM