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Java JSch Library to Read Remote File Line by Line
1. Overview The Java Secure Channel (JSch) library provides an API for connecting Java applications to remote servers, enabling various remote operations. One of its powerful features is the ability to...
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Determining All Years Starting on a Sunday Within a Given Year Range
1. Overview Determining all years that start on a Sunday might seem like a simple requirement. However, it can be quite relevant in various real-world scenarios or business use cases. Specific dates...
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Automated Accessibility Testing With Selenium
1. Overview Accessibility testing is crucial for ensuring that software applications are usable by everyone, including people with impairments. Performing accessibility tests manually can be...
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Understanding Kafka Consumer Offset
1. Overview A Kafka consumer offset is a unique, monotonically increasing integer that identifies the position of an event record in a partition. Each consumer in the group maintains a specific offset...
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Query JPA Repository With Single Table Inheritance Subtypes
1. Overview JPA is a useful tool when developing Java-based applications. We know about inheritance in Java, but when we have inheritance in JPA entities, JPA provides multiple strategies for handling...
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Solving “java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver”
1. Overview The Java Database Connectivity (JDBC) Application Programming Interface (API) provides a set of classes and interfaces. We can use these to develop applications to connect to data sources...
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A Guide to @Locked in Lombok
1. Overview Project Lombok is a Java library that provides various annotations we can use to generate standard methods and functionalities, reducing the boilerplate code. For instance, we can use...
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Parse XML as a String in Java
1. Overview Sometimes, we may come across a scenario that requires us to convert an XML (Extensible Markup Language) string to an actual XML document that we can process. It’s more common in tasks like...
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Handling the Blocking Method In Non-Blocking Context Warning
1. Overview In this article, we’ll explore the warning: “Possibly blocking call in non-blocking context could lead to thread starvation”. First, we’ll recreate the warning with a simple example and...
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Conditional Statements in Spring WebFlux Reactive Flow
1. Overview Using conditional statements in a Spring WebFlux reactive flow allows for dynamic decision-making while processing reactive streams. Unlike an imperative approach, conditional logic in a...
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Sum of First N Even Numbers Divisible By 3 in Java
1. Overview In this tutorial, we’ll explore calculating the sum of the first N even numbers divisible by 3 using Java. This can be solved using different approaches. We’ll examine two distinct methods...
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Analyzing JMeter Results
1. Overview An Apache JMeter test execution ends with some outcomes that we need to analyze if we want to improve our service performance. These outcomes can be on the service side, with logs and...
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How to Serve a Zip File With Spring Boot @RequestMapping
1. Overview Sometimes we may need to allow our REST API to download ZIP archives. This can be useful for reducing network load. However, we might encounter difficulties downloading the files with the...
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Read Multiple Integers From One Line
1. Introduction In this article, we’ll explore how to read multiple integers from one line written in a file. We’ll explore the standard Java packages, specifically BufferedReader, and Scanner to...
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Rapid Spring Boot Prototyping with Bootify
1. Introduction In today’s fast-paced development environment, accelerating the development process is crucial for delivering projects efficiently. Generating boilerplate code and configuration files...
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How to Convert float to int in Java
1. Overview In Java programming, it’s common to face the need to convert a floating-point value to an integer. Since float allows decimal values, whereas int only holds whole numbers, converting...
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Spring Boot 3 – Configure Spring Security to Allow Swagger UI
1. Overview In this tutorial, we’ll learn how to configure Spring Security to allow access to Swagger UI in a Spring Boot 3 application. Swagger UI is a tool for documenting APIs. It provides a...
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Java Weekly, Issue 564
1. Spring and Java >> Exploring New Features in JDK 23: Gatherers upgrades pipeline design pattern JEP-461 [foojay.io] Let’s look at how JEP 461 stream gatherers can help handle complex data and...
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How To Add Header and Footer to PDF Using iText in Java
1. Introduction Adding headers and footers to PDF documents enhances their readability and professionalism. This is useful in many PDF documents, such as reports, invoices, or presentations. For...
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