Fixing Spring Boot H2 Exception: “Schema not found”
The H2 “Schema Not Found” exception is a common issue that occurs when using Spring Boot with an H2 in-memory database. This error is generally caused by a mismatch between the specified schema in the...
View ArticleEffective Exception Logging Strategies in Spring Boot
Effective exception logging is a critical aspect of building robust Spring Boot applications. As applications grow in complexity, managing errors and exceptions becomes increasingly important for...
View ArticleFixing ClassCastException: java.math.BigInteger cannot be cast to...
The ClassCastException occurs when Java attempts to cast an object of one type to another, incompatible type. One common occurrence is the exception message:java.lang.ClassCastException:...
View ArticleOptimizing Spring WebFlux Logging with Zalando Logbook and ELK
In modern microservice architectures, effective logging and observability are crucial for monitoring and troubleshooting distributed systems. With the rise of Spring WebFlux, a reactive framework for...
View ArticleParse JSON with Manifold: JSON Schema-Aware Parsing
Manifold is a set of Java plugins that adds useful language features. This article explores Manifold JSON, a tool that makes working with JSON easier and safer. Manifold JSON uses a JSON Schema to...
View ArticleCount Subarrays with a Specified Average Value
This article will tackle a problem involving subarrays and arithmetic means, aiming to develop an efficient solution. So, lets explore how to efficiently count subarrays with a specified average value...
View ArticleGet Date and Time From a Datetime String in Java
Working with date and time is a common task in programming. In Java, a String containing both date and time values often needs to be parsed and manipulated to extract specific parts, such as the date...
View ArticleSelect Value From Dropdown Using Selenium Webdriver Example
1. Introduction Selenium is an open-source testing framework for web applications. It supports common web browsers. For example, Selenium supports Google Chrome via ChromeDriver, Mozilla Firefox via...
View ArticleWhy Maven Dependency Order Matters
Maven is a widely used build automation tool in Java-based projects. One of the key functionalities of Maven is managing project dependencies, which allows developers to include libraries and...
View ArticleDynamic Constraint Application in Java Bean Validation
Java Bean Validation is a powerful framework for validating Java objects. While it provides a declarative approach using annotations, there are scenarios where you need to apply constraints...
View ArticleSorting a List of Pair in Java
In programming, working with pairs of data is a common task, especially when dealing with collections. This article aims to show how to sort a list of these pairs in descending order by frequency so...
View ArticleAdd RGB Values Into setColor() in Java
In Java, graphics programming often requires manipulating colors for various visual elements. The setColor() method plays a crucial role in defining the color used for drawing shapes and text in...
View ArticleConvert String to Date Using MapStruct in Java
MapStruct is a tool in Java that simplifies the process of object-to-object mapping. It is often used in applications to transfer data between layers or convert Data Transfer Objects (DTOs) into...
View ArticleCombine Separate Date and Time Variables in Java
When working with Java, there might be situations where dates and times need to be handled separately. For example, we might receive a date from a form and a time from another system. To perform...
View ArticleString and StringBuilder Converting Example
1. Introduction Java String class is from the java.lang package and represents a sequence of characters and it’s immutable. The StringBuilder class is also from the java.lang package but represents a...
View ArticleHow to Print Array Contents in Java
Arrays are one of the most fundamental data structures in Java, and they are used to store multiple values of the same type. Printing the content of arrays can be essential for debugging or displaying...
View ArticleFind Nested Key via Jackson Example
1. Introduction JavaScript Object Notation (JSON) is a text-based format for storing and exchanging data. It’s commonly used to transfer data between a server and a web application. Working with JSON...
View ArticleFinding Odd and Even Numbers in a Java Array
Identifying odd and even numbers is one of the fundamental concepts in programming. In Java, determining whether a number is odd or even is a straightforward task, typically done using the modulus...
View ArticleAccessFlag for Modifiers in Java Reflection
Java Reflection is a powerful feature that allows developers to inspect and manipulate classes, methods, and fields at runtime. One of the key aspects of Reflection is the ability to access and...
View ArticleJava Two Dimensional Arrays Equality Check
In this article, we will learn how to check if two 2D arrays are equal in Java. We’ll start by understanding what a 2D array is, then dive into the code example for the Java two dimensional arrays...
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