【正文】 荊楚理工學(xué)院 學(xué)生課程考核論文 學(xué) 院： 計算機 工程 學(xué)院 專 業(yè)： 軟件技術(shù) 班 級： 軟件技術(shù)（ 1）班 課 程： 專業(yè)英語 論文題目： JAVA 介紹 學(xué)生姓名： 王選 時 間： 2020 年 12 月 2 日 成績評定： Introduction to Java autor： Martin Ngobye. source： Computing Static Slice for Java Programs Java is designed to meet the challenges of application development in the context of heterogeneous, workwide distributed environments. Paramount among these challenges is secure delivery of applications that consume the minimum of system resources, can run on any hardware and software platform, and can be extended dynamically. Java originated as part of a research project to develop advanced software for a wide variety of work devices and embedded systems. The goal was to develop a small, reliable, portable, distributed, realtime operating platform. When the project started, C++ was the language of choice. But over time the difficulties encountered with C++ grew to the point where the problems could best be addressed by creating an entirely new language platform. Design and architecture decisions drew from a variety of languages such as Eiffel, SmallTalk, Objective C, and Cedar/Mesa. The result is a language platform that has proven ideal for developing secure, distributed, work based enduser applications in environments ranging from workembedded devices to the WorldWide Web and the desktop. The design requirements of Java are driven by the nature of the puting environments in which software must be deployed. The massive growth of the Inter and the WorldWide Web leads us to a pletely new way of looking at development and distribution of software. To live in the world of electronic merce and distribution, Java must enable the development of secure, high performance, and highly robust applications on multiple platforms in heterogeneous, distributed works. Operating on multiple platforms in heterogeneous works invalidates the traditional schemes of binary distribution, release, upgrade, patch, and so on. To survive in this jungle, Java must be architecture neutral, portable, and dynamically adaptable. The Java system that emerged to meet these needs is simple, so it can be easily programmed by most developers。 familiar, so that current developers can easily learn Java。 object oriented, to take advantage of modern software development methodologies and to fit into distributed clientserver applications。 multithreaded, for high performance in applications that need to perform multiple concurrent activities, such as multimedia。 and interpreted, for maximum portability and dynamic capabilities. Together, the above requirements prise quite a collection of buzzwords, so let’s examine some of them and their respective benefits before going on. What’s pletely new is the manner in which Java and its runtime system have bined them to produce a flexible and powerful programming system.. Developing your applications using Java results in software that is portable across multiple machine architectures, operating systems, and graphical user interfaces, secure, and high performance, With Java, your job as a software developer is much easier— you focus your full attention on the end goal of shipping innovative products on time, based on the solid foundation of Java. The better way to develop software is here, now, brought to you by the Java language platform. Very dynamic languages like Lisp, TCL, and SmallTalk are often used for prototyping. One of the reasons for their success at this is that they are very robust— you don’t have to worry about freeing or corrupting memory. Similarly, programmers can be relatively fearless about dealing with memory when programming in Java, The garbage collection system makes the programmer’s job vastly easier。 with the burden of memory management taken off the programmer’s shoulders, storage allocation errors go away. Another reason monly given that languages like Lisp, TCL, and SmallTalk are good for prototyping is that they don’t require you to pin down decisions early on— these languages are semantically rich. Java has exactly the opposite property: it forces you to make explicit choices. Along with these choices e a lot of assistance— you can write method invocations and, if you get something wrong, you get told about it at pile time. You don’t have to worry about method invocation error. The Java beginner must grasp 30 basic concepts Basic concept OOP the only relations is what the object’s interface, such as the puter seller he leaves alone internal structure of electrical source, but he is only concerned about that whether the power will be supplied to you, also so long as know can or not but is not how and procedures are make up of certain attribute and the behavior object, the different