Basic Java Program

When new programmers embark on their coding journey, they typically begin by writing small programs—simple scripts or command-line utilities, for example. These initial programs do not require complex language constructs designed for larger projects. Concepts like classes, packages, and modules, essential for organizing and maintaining large-scale applications, are not only unnecessary but can be overwhelming at this stage.

Consider the classic “Hello, World!” program that is often used as the first program in Java tutorials:

While this program is extremely simple in terms of functionality, it introduces several Java language constructs that can be perplexing for beginners. The class declaration, the public access modifier, the String[] args parameter, and the static modifier—all of these elements may be unfamiliar and seemingly unnecessary for a basic introductory program.

The challenge is that novice programmers encounter these advanced language features before they fully grasp fundamental programming concepts like variables and control flow. Educators often find themselves saying, “Don’t worry about that; you’ll understand it later.” This can be unsatisfying for both teachers and students and can lead to the impression that Java is a complex and convoluted language.

Java has introduced a significant language enhancement in Java Enhancement Proposal (JEP) 445, titled “Unnamed Classes and Instance Main Methods“. This proposal aims to address the needs of beginners, making Java more accessible and less intimidating.

Let’s delve into the specifics of this proposal and understand how it simplifies the learning curve for Java newcomers.