### 计算机代写|Java代写|Java’s Lineage: C and C++

Java是一种广泛使用的计算机编程语言，拥有跨平台、面向对象、泛型编程的特性，广泛应用于企业级Web应用开发和移动应用开发。

statistics-lab™ 为您的留学生涯保驾护航 在代写Java方面已经树立了自己的口碑, 保证靠谱, 高质且原创的统计Statistics代写服务。我们的专家在代写Java代写方面经验极为丰富，各种代写Java相关的作业也就用不着说。

• Statistical Inference 统计推断
• Statistical Computing 统计计算
• (Generalized) Linear Models 广义线性模型
• Statistical Machine Learning 统计机器学习
• Longitudinal Data Analysis 纵向数据分析
• Foundations of Data Science 数据科学基础

## 计算机代写|Java代写|Java’s Lineage: C and C++

The history of computer languages is not one of isolated events. Rather, it is a continuum in which each new language is influenced in one way or another by what has come before. In this regard, Java is no exception. Before moving on, it is useful to understand where Java fits into the family tree of computer languages.

The two languages that form Java’s closest ancestors are $\mathrm{C}$ and $\mathrm{C}++$. As you may know, $\mathrm{C}$ and $\mathrm{C}++$ are among the most important computer languages ever invented and are still in widespread use today. From C, Java inherits its syntax. Java’s object model is adapted from $\mathrm{C}++$. Java’s relationship to $\mathrm{C}$ and $\mathrm{C}++$ is important for a number of reasons. First, at the time of Java’s creation, many programmers were familiar with the $\mathrm{C} / \mathrm{C}++$ syntax. Because Java uses a similar syntax, it was relatively easy for a $\mathrm{C} / \mathrm{C}++$ programmer to learn Java. This made it possible for Java to be readily utilized by the pool of existing programmers, thus facilitating Java’s acceptance by the programming community.
Second, Java’s designers did not “reinvent the wheel.” Instead, they further refined an already highly successful programming paradigm. The modern age of programming began with $\mathrm{C}$. It moved to $\mathrm{C}++$ and then to Java. By inheriting and building on that rich heritage, Java provides a powerful, logically consistent programming environment that takes the best of the past and adds new features related to the online environment and advances in the art of programming. Perhaps most important, because of their similarities, C, C++, and Java define a common, conceptual framework for the professional programmer. Programmers do not face major rifts when switching from one language to another.
Java has another attribute in common with $\mathrm{C}$ and $\mathrm{C}++$ : it was designed, tested, and refined by real working programmers. It is a language grounded in the needs and experiences of the people who devised it. There is no better way to produce a top-flight professional programming language.
One last point: although $\mathrm{C}++$ and Java are related, especially in their support for objectoriented programming, Java is not simply the “Internet version of C++.” Java has significant practical and philosophical differences from $\mathrm{C}++$. Furthermore, Java is not an enhanced version of $\mathrm{C}++$. For example, it is neither upwardly nor downwardly compatible with $\mathrm{C}++$. Moreover, Java was not designed to replace $\mathrm{C}++$. Java was designed to solve a certain set of problems. $\mathrm{C}++$ was designed to solve a different set of problems. They will coexist for many years to come.

## 计算机代写|Java代写|How Java Impacted the Internet

The Internet helped catapult Java to the forefront of programming, and Java, in turn, had a profound effect on the Internet. First, the creation of Java simplified Internet programming in general, acting as a catalyst that drew legions of programmers to the Web. Second, Java innovated a new type of networked program called the applet that changed the way the online world thought about content. Finally, and perhaps most importantly, Java addressed some of the thorniest issues associated with the Internet: portability and security.

From the start, Java simplified web-based programming in a number of ways. Arguably the most important is found in its ability to create portable, cross-platform programs. Of nearly equal importance is Java’s support for networking. Its library of ready-to-use functionality enabled programmers to easily write programs that accessed or made use of the Internet. It also provided mechanisms that enabled programs to be readily delivered over the Internet. Although the details are beyond the scope of this book, it is sufficient to know that Java’s support for networking was a key factor in its rapid rise.

## 计算机代写|Java代写|Java Applets

At the time of Java’s creation, one of its most exciting features was the applet. An applet is a special kind of Java program that is designed to be transmitted over the Internet and automatically executed inside a Java-compatible web browser. If the user clicks a link that contains an applet, the applet will download and run in the browser automatically. Applets were intended to be small programs, typically used to display data provided by the server, handle user input, or provide simple functions, such as a loan calculator. The key feature of applets is that they execute locally, rather than on the server. In essence, the applet allowed some functionality to be moved from the server to the client.

The creation of the applet was important because, at the time, it expanded the universe of objects that could move about freely in cyberspace. In general, there are two very broad categories of objects that are transmitted between the server and the client: passive information and dynamic active programs. For example, when you read your e-mail, you are viewing passive data. Even when you download a program, the program’s code is still only passive data until you execute it. By contrast, the applet is a dynamic, self-executing program. Such a program is an active agent on the client computer, yet it is delivered by the server.

In the early days of Java, applets were a crucial part of Java programming. They illustrated the power and benefits of Java, added an exciting dimension to web pages, and enabled programmers to explore the full extent of what was possible with Java. Although it is likely that there are still applets in use today, over time they became less important, and for reasons that will be explained shortly, JDK 9 began their phase-out process. Finally, applet support was removed by JDK $11 .$

## 计算机代写|Java代写|Java’s Lineage: C and C++

Java 有另一个共同的属性C和C++：它是由真正的工作程序员设计、测试和改进的。它是一种基于设计它的人的需求和经验的语言。没有更好的方法来制作一流的专业编程语言。

## 有限元方法代写

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## MATLAB代写

MATLAB 是一种用于技术计算的高性能语言。它将计算、可视化和编程集成在一个易于使用的环境中，其中问题和解决方案以熟悉的数学符号表示。典型用途包括：数学和计算算法开发建模、仿真和原型制作数据分析、探索和可视化科学和工程图形应用程序开发，包括图形用户界面构建MATLAB 是一个交互式系统，其基本数据元素是一个不需要维度的数组。这使您可以解决许多技术计算问题，尤其是那些具有矩阵和向量公式的问题，而只需用 C 或 Fortran 等标量非交互式语言编写程序所需的时间的一小部分。MATLAB 名称代表矩阵实验室。MATLAB 最初的编写目的是提供对由 LINPACK 和 EISPACK 项目开发的矩阵软件的轻松访问，这两个项目共同代表了矩阵计算软件的最新技术。MATLAB 经过多年的发展，得到了许多用户的投入。在大学环境中，它是数学、工程和科学入门和高级课程的标准教学工具。在工业领域，MATLAB 是高效研究、开发和分析的首选工具。MATLAB 具有一系列称为工具箱的特定于应用程序的解决方案。对于大多数 MATLAB 用户来说非常重要，工具箱允许您学习应用专业技术。工具箱是 MATLAB 函数（M 文件）的综合集合，可扩展 MATLAB 环境以解决特定类别的问题。可用工具箱的领域包括信号处理、控制系统、神经网络、模糊逻辑、小波、仿真等。