In this article, we will explore how to handle situations when you’re deserializing JSON data into Java objects using Jackson, and the JSON contains fields that are not present in the Java class.
In the first article of our Jackson tutorial series, we learned how to convert JSON string into Java objects. In this article, we will explore the reverse process – converting Java objects, arrays, and lists into JSON strings using the ObjectMapper class.
Jackson is a widely-used library in the Java ecosystem for working with JSON data. The ObjectMapper class, a core component of Jackson, simplifies the process of converting JSON string to Java objects, object arrays and list of objects.
Java Streams provide a powerful and expressive way to process data collections in a functional style. The Stream.of() method is a fundamental part of the Java Stream API, allowing you to create streams from individual elements or arrays.
Singleton classes are a fundamental design pattern in Java, used when you want to ensure that a class has only one instance and provide a global point of access to that instance. This pattern is invaluable when precisely one object is needed to coordinate actions across the system, such as a configuration manager, thread pool, or database connection. In this guide, we will explore various ways to create singleton classes in Java.
In Java, immutability is a key concept in object-oriented programming. An immutable class is one whose state cannot be modified after it has been created. Immutable classes provide numerous benefits, including thread safety, ease of use, and robustness in concurrent programming. In this guide, we will explore the principles of creating immutable classes in Java and demonstrate step-by-step how to implement them effectively.
Java 8 introduced the Stream API, which revolutionized the way we work with collections in Java. Among the various stream types,
IntStream is a specialized stream that deals exclusively with primitive int values. In this comprehensive guide, we will take a deep dive into
IntStream, exploring its features, use cases, and how to harness its power in your Java applications.
In the world of Java programming, Java 8 introduced the Stream API, which revolutionized the way we work with collections. Among the numerous features Stream offers, the
reduce() method stands out as a powerful tool for performing aggregation operations on a stream of elements. This method allows you to perform operations such as summing, multiplying, finding the maximum or minimum, and more, with ease and elegance. In this article, we’ll dive deep into the world of
Stream.reduce(), exploring its syntax, common use cases, and best practices.
Google Guava is a powerful library that complements the Java Standard Library with additional utilities and data structures. One such versatile data structure provided by Guava is the
Multimap. In this comprehensive guide, we will explore what a
Multimap is, its use cases, and how to effectively utilize it in your Java applications.
UnsupportedOperationException is a member of Java Collection Framework, it’s thrown when an operation cannot be performed because it is not supported for that particular collection.
One of the most common causes for this exception is using the Arrays.asList() method, Let’s dive into the source codes and figure out why this could happen.