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所在平台: Udemy |
课程主页: https://www.udemy.com/course/java-programming-practice-test-for-personal-development/
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课程名称:Java 编程实践测试以个人发展 概述: 本课程旨在帮助学习者了解 Java 的基础知识,并判断 Java 是否是学习编程语言的最佳选择。Java 由 Sun Microsystems 于 1995 年首次发布,现已发展成为现代数字世界的核心,支持多种服务和应用程序。Java 以其快速、安全和可靠的特性,广泛应用于笔记本电脑、数据中心、游戏机、科学超级计算机、手机等设备的应用开发中。 Java 的流行原因: 根据 TIOBE 指数,Java 是全球第三大流行编程语言,紧随 Python 和 C 之后。Java 的流行归因于以下几个显著特点: 1. 多功能性:Java 被广泛用于 Web 应用、Android 应用以及各种软件开发工具的创建。 2. 开发工具:集成开发环境(IDE)是 Java 的主要特性之一,包括自动化工具、编辑器和调试工具。 3. 用户友好:Java 的语法类似于英语,非常适合新手,学习过程可分为核心 Java 和高级 Java 两个阶段。 4. 良好的文档支持:Java 是开源的,拥有丰富的文档支持,便于解决编码时遇到的问题。 5. 强大的 API:尽管 Java 只有约五十个关键字,但其应用程序编程接口(API)功能强大,提供了多种可以直接在代码中使用的方法。 6. 大型社区:Java 社区的支持是其受欢迎的原因之一,Stack Overflow 上的 Java 社区是全球第二大。 Java 与 JavaScript 的区别: 尽管名称相似,Java 与 JavaScript 是两种不同的语言。Java 是面向对象的编程语言,主要用于服务器端开发,而 JavaScript 主要关注客户端脚本。 为什么学习 Java? 1. 高收入:根据预测,未来十年,软件开发工作将增长 22%,后端开发者的需求尤为旺盛。Java 开发者的年均收入为 91,465 美元,属于行业中较高水平。 2. 易于学习:Java 的设计考虑到了新开发者,提供了一个安全的实验环境,专注于编程而非复杂细节。 3. 学习其他语言的良好基础:掌握 Java 后,学习 C、C#、C++、Python 等其他编程语言会变得相对容易。 4. 广泛使用:Java 被广泛应用于几乎所有操作系统,持续更新以适应行业发展。 5. 灵活性:Java 是一种可扩展和高度可移植的语言,支持跨平台操作。 总结: 本课程适合希望了解 Java 基础并开展编程学习的学习者,探讨 Java 的诸多优点及其在现代技术中的重要性。
Java - the basicsLet's address the basics before we dive into the details of Java. If you're looking to learn a programming language, this will help you to determine whether Java is the best one to start with.What is Java?Sun Microsystems first published Java in 1995 as a programming language and computing platform. It has grown from humble origins to power much of today's digital world by offering a secure platform on which many services and applications are built. New, innovative goods and digital services still use Java as a platform, showing its versatility and how future-proof it is.Java is fast, secure, and reliable. Developers use Java to construct applications in laptops, data centres, game consoles, scientific supercomputers, cell phones, and other devices.Why is Java so popular? The features of JavaJava is the world's third most popular programming language, after Python and C - according to the TIOBE index, which evaluates programming language popularity. We can attribute the language's widespread use to several notable features of Java:Versatility. Java has long been the de-facto programming language for creating Web apps, Android apps, and software development tools such as Eclipse, IntelliJ IDEA, and NetBeans IDE.Development tools. The Integrated Development Environment (IDE) is one of Java's most intriguing features. The Java IDE is a collection of automation tools, editors, and debuggers.User-friendliness. Java features an English-like grammar, making it ideal for novices. You can learn Java in two stages: core Java first, then advanced Java.Good documentation. Because Java is an open-source programming language, it is completely free. Java is well-documented, which is an important feature of the language. It includes a full guide that will explain any issues you may encounter when coding in Java.A robust API. Although Java only has about fifty keywords, its Application Programming Interface (API) is wide and comprehensive, with various methods that may be used directly in any code.A large community. The community support for Java is one of the drivers behind its popularity. It has the distinction of being the second-largest Stack Overflow community.Java vs JavaScript - what's the difference?Despite both having ‘Java' in their name, Java and JavaScript are two separate languages. While Java is an object-oriented programming language, JavaScript is an object-oriented scripting language. Java is mainly used for server-side development, while JavaScript focuses more on client-side scripts.You can read more about what JavaScript is used for in our full blog post. If you're interested in learning how to use JavaScript, our course from the University of Michigan can help you get started.Why learn Java?So, now that we know why Java is so popular, why should you learn how to use it? Aside from the simplicity of usage and versatility, there are several reasons to learn Java:Java programmers earn bigOver the next decade, software developer jobs are predicted to expand by 22%, with backend developers in particularly great demand due to their specialised skill set. Furthermore, the average base wage for backend developers in the United States is $80,000, which is 54 percent higher than the national median income.These figures are encouraging for Java developers, who are among the best-paid programmers in the industry. Java developers now earn an average of $91,465 per year, which is comparable to that of other mainstream language developers.Java is easy to learnThe programming language was created with new developers in mind, providing a safe environment for them to experiment with the language and make mistakes. Java is a broad and high-level language that focuses on programming rather than complicated details.Java is a great starting point for other programming languagesAfter learning Java, it's relatively easy to learn other coding languages such as C, C#, C++, Python, and more. Java teaches novice coders how to think like a programmer, going through processes using logic and putting ideas to the test.Java is a widely used and popular programming languageAlmost every operating system uses Java, from the web to mobile to desktop. The Java programming language, which is widely used with corporate applications and Android mobile operating systems, is regularly updated to stay up-to-date with industry developments and can support a wide range of languages throughout its platform.Java isn't going anywhereThe digital world is constantly changing, and developers are looking for new languages and frameworks to give them an advantage. While being current is crucial, staying on trend can be costly and ineffective when industries shift. As a result, the importance of Java cannot be emphasised, especially as new languages and technologies emerge.Java is a flexible languageJava is not only widely used in technology, but it is also easily scalable and, most importantly, highly portable, as it must be run on a cross-platform Java Virtual Machine (JVM). This JVM transmits platform-specific instructions to your computer, which means that once a developer produces code, they can port it to another system on almost any computing device.