Month: April 2025

Struggling with "No suitable constructor found" error in Jackson? Learn step-by-step solutions to resolve JsonMappingException and instantiate Java objects from JSON seamlessly. Table of Contents Understanding the Error Why This…

In this guide, you’ll discover five effective techniques to deserialize generic types with Gson, including the classic TypeToken approach, simple array-to-list conversion, custom ParameterizedType wrappers, subclassing ArrayList, and the modern…

In Java, you can convert a JSON-formatted string into an in-memory JSON object representation using several popular libraries, each offering its own API and features. The simplest is the lightweight…

Discover three reliable ways to configure Jackson to ignore unknown JSON fields using annotations, ObjectMapper, and Spring Boot. Prevent crashes and ensure backward compatibility in your Java or Android apps.…

Jackson is a popular JSON library for Java that can easily convert JSON arrays into Java object arrays or collections In this tutorial, How to Use Jackson to Deserialize an…

Meta Description: Learn how to parse JSON in Java using libraries like org.json, Jackson, Gson, javax.json, and JsonPath. This guide provides step-by-step examples, pros/cons, and best practices for Java JSON…

Converting HTML files to PDF format is a common requirement in many web applications. Whether you need to generate reports, invoices, or documentation, transforming web content into portable, print-friendly PDF…

Are you struggling with PDF rendering in your Android application? You're not alone. Android doesn't include comprehensive PDF support in its standard libraries, but that doesn't mean you can't display…

You're right that while you can get an Image instance from the imported page, this isn't directly convertible to a JPEG file with the older iText library alone. The Image.getInstance()…

Meta Description: Learn the correct way to format Java file copyright comments using /* */ instead of Javadoc-style /** */. Avoid common mistakes and follow standard conventions for clean, professional…

Last updated: April 24, 2025 Working with Spring applications often involves managing numerous configuration properties across multiple files. A common challenge developers face is how to efficiently filter and access…

Last updated: April 24, 2025 If you're a Java developer or security professional, you've likely wondered about the reversibility of the compilation process. Can all Java bytecode be decompiled back…