A constructor is a special function that creates and initializes an object instance of a class. In JavaScript, a constructor gets called when an object is created using the new keyword. The purpose of a constructor is to create a new object and set values for any existing object properties.

Symbol tables are an important data structure created and maintained by compilers to store information associated with identifiers . A simplified representation of a symbol table entry (or simply, a symbol) in Java has the following format: .

By definition, an identifier in Java is a sequence of one or more characters, where the first character must be a valid first character (letter, $, _) and each subsequent character in the sequence must be a valid non-first character (letter, digit, $, _). An identifier can be used to name a package, a class, an interface, a method, a variable, etc.

Spring is the most popular application development framework in Java. However, over the past few years, Spring has become increasingly complex because of added functionalities. Starting a new project usually requires going through a lengthy process and takes a lot of time. To avoid starting from scratch and to save time, Spring Boot was introduced. Spring Boot uses Spring as its foundation layer and allows developers to build a standalone application with none or minimal configuration.

Statements are foundational language constructs that have an effect on the execution of a program. Statements are similar to sentences in natural languages. In Java, there are three main types of statements, namely expression statements, declaration statements, and control-flow statements 1. As a compiled programming language, Java has an inbuilt mechanism for preventing many source code errors from winding up in executable programs and surfacing in production environments 2.

Serverless Java applications use modern cloud computing to let developers focus on business logic rather than infrastructure. In a serverless environment, the infrastructure provider takes care of scaling, runtimes, resource management, security and other specifics. Concerns such as number of instances to run and which OS to use are managed by Function as a Service (FaaS) platforms, allowing developers to focus on application code.

Cloud-native has been one of the biggest trends in software development for quite a while. Developing, deploying and managing applications outside of local machines and entirely in the cloud offers countless opportunities to businesses. The cloud computing delivery model helps them bring new ideas to market faster and respond swiftly to customer requests. From a technical point of view, cloud-native development provides faster and lighter runtimes, reduces complexity and stabilizes applications.

In modern application architecture and development, there has been a push from monolithic applications towards microservices. This has made microservices frameworks (micro-frameworks) very popular since they make it easier to prototype, design and build microservices applications. Spring Boot and Quarkus are both very popular microservices frameworks for building cloud native Java applications.

Twas the night of production, and all through the server, all the bugs were stirring... We've all heard the developer horror stories or have had our fair share of shocking experiences as a developer tackling an unfortunate event. To keep up with the Halloween season, we wanted to hear some of the spooky encounters that developers dealt with. Here are some of the stories that you submitted to Rollbar. Make sure to turn on the light and read with caution!

An exception is an unwanted or unexpected event that occurs during the execution of a program which changes its normal flow. Exception handling is the mechanism to respond to and investigate the occurrence and cause of an exception. Generally, exceptions are of two types - checked and unchecked.