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You are a reporter for a major world newspaper. Write your response as if you were writing a short, high-quality news article for your paper. Limit your response to one paragraph. Use the following article for context: JEP 477 Enhances Beginner Experience with Implicitly Declared Classes and Instance Main Methods - InfoQ<link rel="stylesheet" type="text/css" href="https://cdn.infoq.com/statics_s1_20240521072209/styles/style_en.css"/> <link rel="stylesheet" href="https://cdn.infoq.com/statics_s1_20240521072209/styles/icons.css"> <link rel="stylesheet" type="text/css" media="screen" href="https://cdn.infoq.com/statics_s1_20240521072209/styles/style_extra.css"/><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-W9GJ5DL" height="0" width="0" style="display:none;visibility:hidden"></iframe>BTInfoQ Software Architects' NewsletterA monthly overview of things you need to know as an architect or aspiring architects.View an exampleMemorial Day Sale:Save up to 60%onInfoQ Dev Summit Boston(June 24-25)Enter your e-mail addressSelect your countrySelect a countryI consent to InfoQ.com handling my data as explained in thisPrivacy Notice.We protect your privacy.CloseToggle NavigationFacilitating the Spread of Knowledge and Innovation in Professional Software DevelopmentEnglish editionEnglish editionChinese editionJapanese editionFrench editionWrite for InfoQSearchSign Up / LoginEmailPasswordForgot password ?InfoQ Account EmailBack to loginResend ActivationBack to loginLogin with:GoogleMicrosoftTwitterFacebookDon't have an InfoQ account?Sign UpLogo - Back to homepageNewsArticlesPresentationsPodcastsGuidesTopicsDevelopmentJavaKotlin.NetC#SwiftGoRustJavaScriptFeatured in DevelopmentFrom Mainframes to Microservices - the Journey of Building and Running SoftwareSuhail Patel discusses the platforms and software patterns that made microservices popular, and how virtual machines and containers have influenced how software is built and run at scale today.All in developmentArchitecture & DesignArchitectureEnterprise ArchitectureScalability/PerformanceDesignCase StudiesMicroservicesService MeshPatternsSecurityFeatured in Architecture & DesignArchitecture Modernization with Nick TuneIn this episode, Thomas Betts talks with Nick Tune, co-author of the book Architecture Modernization - Socio-technical Alignment of Software, Strategy, and Structure. 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Subscribe for free.InfoQ HomepageNewsJEP 477 Enhances Beginner Experience with Implicitly Declared Classes and Instance Main MethodsJavaJEP 477 Enhances Beginner Experience with Implicitly Declared Classes and Instance Main MethodsLikeBookmarksMay 27, 20243 min readbyA N M Bazlur RahmanWrite for InfoQFeed your curiosity.Help 550k+ globalsenior developerseach month stay ahead.Get in touchJEP 477,Implicitly Declared Classes and Instance Main Methods (Third Preview), has been promoted from itsProposed to TargettoTargetedstatus. This JEP proposes to "evolve the Java language so that students can write their first programs without needing to understand language features designed for large programs." This JEP moves forward the September 2022 blog post,Paving the on-ramp, byBrian Goetz, the Java language architect at Oracle. The latest draft of thespecification documentbyGavin Bierman, a consulting member of the technical staff at Oracle, is open for review by the Java community.Java has long been recognized for its capabilities in building large, complex applications. However, its extensive features can be daunting for beginners who are just starting to learn programming. To address this, this JEP has introduced new preview features to simplify the language for new programmers. These features allow beginners to write their first programs without needing to understand complex language constructs designed for larger applications and empower experienced developers to write small programs more succinctly, enhancing their productivity and code readability.Consider the classicHello, World!example that is often a beginner's first program:public class HelloWorld { public static void main(String[] args) { System.out.println("Hello, World!"); } }With this JEP, the above program can be simplified to:void main() { println("Hello, World!"); }The proposal introduces several key features designed to simplify Java for beginners while maintaining its robust capabilities. One of the main highlights is the introduction of implicitly declared classes, allowing new programs to be written without explicit class declarations. In this new approach, all methods and fields in a source file are considered part of an implicitly declared class, which extendsObject, does not implement interfaces, and cannot be referenced by name in source code. Additionally, the proposal introduces instance main methods, which no longer need to bestaticorpublic, and methods without parameters are also recognized as valid program entry points.With these changes, developers can now writeHello, World!As:void main() { System.out.println("Hello, World!"); }Top-level members are interpreted as members of the implicit class, so we can also write the program as:String greeting() { return "Hello, World!"; } void main() { System.out.println(greeting()); }Or, using a field as:String greeting = "Hello, World!"; void main() { System.out.println(greeting); }Following the initial preview in JDK 21 (JEP 445) and subsequent updates in JDK 22 (JEP 463), the proposal has been refined further based on community feedback. For instance, in this JEP, implicitly declared classes now automatically import the following three static methods from the newjava.io.IOclass for simple textual I/O:public static void println(Object obj); public static void print(Object obj); public static String readln(String prompt);This change eliminates the need for theSystem.out.printlnincantation, thereby simplifying console output. Consider the following example:void main() { String name = readln("Please enter your name: "); print("Pleased to meet you, "); println(name); }Many other classes declared in the Java API are useful in small programs. They can be imported explicitly at the start of the source file:import java.util.List; void main() { var authors = List.of("James", "Bill", "Bazlur", "Mike", "Dan", "Gavin"); for (var name : authors) { println(name + ": " + name.length()); } }However, with theJEP 476, Module Import Declarations, implicitly declared classes automatically import all public top-level classes and interfaces from thejava.basemodule, removing the need for explicit import statements for commonly used APIs such asjava.util.List. This makes the development process more seamless and reduces the learning curve for new programmers. More details on JEP 476 may be found in this InfoQnews story.This is apreview language feature, available through the--enable-previewflag with the JDK 23 compiler and runtime. To try the examples above in JDK 23, you must enable the preview features:Compile the program withjavac --release 23 --enable-preview Main.javaand run it withjava --enable-preview Main; or,When using thesource code launcher, run the program withjava --enable-preview Main.java; or,When usingjshell, start it with jshell--enable-preview.Rather than introducing a separate dialect of Java, this JEP streamlines the declaration process for single-class programs. This approach facilitates a gradual learning curve, allowing beginners to start with simple, concise code and progressively adopt more advanced features as they gain experience. By simplifying syntax and minimizing boilerplate code, Java continues to uphold its reputation as a versatile and powerful programming language suitable for a wide range of applications. This enhancement not only makes Java more accessible to new programmers but also boosts productivity and readability for experienced developers working on smaller projects.About the AuthorA N M Bazlur RahmanShow moreShow lessRate this ArticleAdoptionStyleAuthor ContactedThis content is in theJavatopicRelated Topics:DevelopmentJEPJDK 23JavaRelated EditorialRelated Sponsored ContentPopular across InfoQUber Migrates 1 Trillion Records from DynamoDB to LedgerStore to Save $6 Million AnnuallyDeepthi Sigireddi on Distributed Database Architecture in the Cloud Native EraAhrefs Joins Others in Suggesting That On-Premises Hosting Can Be More Cost Effective than CloudJava News Roundup: OpenJDK Updates, Piranha Cloud, Spring Data 2024.0.0, GlassFish, MicrometerUniSuper’s Entire Infrastructure Deleted by Internal Google Cloud ErrorFrom Mainframes to Microservices - the Journey of Building and Running Software<div class="widget related__content article__widget"> <h3 class="widget__heading">Related Content</h3> <ul class="no-style cards" data-horizontal="true" data-size="xs" data-tax=""> </ul> </div>The InfoQNewsletterA round-up of last week’s content on InfoQ sent out every Tuesday. 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Can you provide me with a simple Java code for software engineering.?

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https://www.infoq.com/news/2024/05/jep477-implicit-classes-main/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=Development

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In a significant development for the Java community, JEP 477 has been promoted to "Targeted" status, bringing forth features aimed at simplifying Java for beginners. The enhancement proposes implicitly declared classes and instance main methods, reducing the need for boilerplate code often daunting to new programmers. For instance, the "Hello, World!" program, traditionally requiring explicit class and method declarations, can now be written in a more streamlined way without the need for the `public static void main(String[] args)` construct. These changes, available as preview features with JDK 23, aim to lower the entry barrier for programming novices and boost productivity for experienced developers by simplifying code structure and enhancing readability. This JEP, building on feedback from prior updates, continues Java’s legacy of adaptability by making the language more accessible while retaining its robust capabilities for complex applications.