Converting a String to char is a common task in Java. Java provides several ways to achieve this. In this blog post, we’ll cover the primary methods and highlight when to use each one. String to char Using charAt() Method The most common way to convert a String to char is by using the charAt() […]Continue reading
The if else statement is a fundamental control structures in Java.. This structure evaluates conditions and executes code based on whether those conditions are true or false. Let’s look at how to use if, if else, and else if statements effectively. The Java if Statement An if statement evaluates a condition and runs the code […]Continue reading
The substring() method in Java is a tool for manipulating strings. It allows you to extract a portion of a string by specifying a start index, and optionally, an end index. Basic Usage of substring() The Java substring() method has two variations: In this example: Important Details Substring Use Cases The Java substring() method is […]Continue reading
Converting an int to a String is a common task in Java, especially when working with user interfaces, file output, or JSON formatting. Java provides several ways to perform this conversion, each with different use cases and characteristics. In this blog post, I will cover the most popular methods for converting int to String and […]Continue reading
String to int conversions are a common task in Java, especially when dealing with user input or API calls. Java provides several ways to perform this conversion. This blog post will cover the most common methods for converting a String to an Integer and cover best practices to avoid potential errors. String to int Using […]Continue reading
This tutorial covers the Java XOR operator, represented by the ^ symbol, which operates on boolean and integer types. It explains how XOR functions as a logical operator for booleans, returning true for different values, and performs a bitwise operation for integers, illustrating with examples and truth tables.
The Java printf() output method is used to generate a formatted string. Data from the arguments is written and formatted placeholders. In this tutorial we will explore the functionality of the printf() method. The Java language was heavily inspired by the C programming language. As such, the printf() method is very similar in functionality to […]Continue reading
JSON Logging in Spring Boot simplifies setup, especially for applications in distributed environments like Kubernetes. Consolidated logging requires searchable logs, often formatted in JSON. Logstash is a popular choice. A basic Logback configuration supports JSON logging, aiding development with profile flexibility. Testing can be done by generating log messages easily.
One of the exceptions that every Java Programmer must have faced is NullPointerException. They are hard to debug and cause unexpected termination of your application. To better handle NullPointerException, Java 8 has introduced the Optional class. In this post, I’ll explain how to use Optional in Java applications. Optional Overview The main benefit of the […]Continue reading
Hikari Connection Pool commonly referred to as HikariCP is a very fast light weight Java connection pool. A connection pool is a cache of database connections. A Connection Pool maintains connections that can be reused when future requests to the database are required. In this post, I will explain Hikari Configuration for Spring Boot 2 […]Continue reading
