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Example research essay topic: Object Oriented Programming Microsoft Internet Explorer - 1,891 words

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... e of programming that combines data structures with functions to create re-usable objects (see under object-oriented programming). Object-oriented graphics is the same as vector graphics. Otherwise, the term object-oriented is generally used to describe a system that deals primarily with different types of objects, and where the actions you can take depend on what type of object you are manipulating. For example an object-oriented draw program might enable you to draw many types of objects, such as circles, rectangles, triangles, etc. Applying the same action to each of these objects, however, would produce different results.

If the action is Make 3 D, for instance, the result would be a sphere, box, and pyramid, respectively. Acronym for Beginner's All-purpose Symbolic Instruction Code. Developed by John Kemeney and Thomas Kurtz in the mid 1960 s at Dartmouth College, BASIC is one of the earliest and simplest high-level programming languages. During the 1970 s, it was the principal programming language taught to students, and continues to be a popular choice among educators.

Despite its simplicity, BASIC is used for a wide variety of business applications. There is an ANSI standard for the BASIC language, but most versions of BASIC include many proprietary extensions. Microsoft's popular Visual Basic, for example, adds many object-oriented features to the standard BASIC. Recently, many variations of BASIC have appeared as programming, or macro, languages within applications. For example, Microsoft Word and Excel both come with a version of BASIC with which users can write programs to customize and automate these applications. In object-oriented programming, a category of objects.

For example, there might be a class called shape that contains objects which are circles, rectangles, and triangles. The class defines all the common properties of the different objects that belong to it. A programming language and environment developed by Microsoft. Based on the BASIC language, Visual Basic was one of the first products to provide a graphical programming environment and a paint metaphor for developing user interfaces.

Instead of worrying about syntax details, the Visual Basic programmer can add a substantial amount of code simply by dragging and dropping controls, such as buttons and dialog boxes, and then defining their appearance and behavior. Although not a true object-oriented programming language in the strictest sense, Visual Basic nevertheless has an object-oriented philosophy. It is sometimes called an event-driven language because each object can react to different events such as a mouse click. Since its launch in 1990, the Visual Basic approach has become the norm for programming languages. Now there are visual environments for many programming languages, including C, C++, Pascal, and Java.

Visual Basic is sometimes called a Rapid Application Development (RAD) system because it enables programmers to quickly build prototype applications. A high-level programming language developed by Sun Microsystems. Java was originally called OAK, and was designed for handheld devices and set-top boxes. Oak was unsuccessful so in 1995 Sun changed the name to Java and modified the language to take advantage of the burgeoning World Wide Web.

Java is an object-oriented language similar to C++, but simplified to eliminate language features that cause common programming errors. Java source code files (files with a. java extension) are compiled into a format called bytecode (files with a. class extension), which can then be executed by a Java interpreter.

Compiled Java code can run on most computers because Java interpreters and runtime environments, known as Java Virtual Machines (VMs), exist for most operating systems, including UNIX, the Macintosh OS, and Windows. Bytecode can also be converted directly into machine language instructions by a just-in-time compiler (JIT). Java is a general purpose programming language with a number of features that make the language well suited for use on the World Wide Web. Small Java applications are called Java applets and can be downloaded from a Web server and run on your computer by a Java-compatible Web browser, such as Netscape Navigator or Microsoft Internet Explorer. Short for Internet Foundation Classes, a set of Java classes developed by Netscape that enables programmers to easily add GUI elements, such as windows, menus and buttons. Netscape and Sun Microsystems have announced that the next version of the Java Development Kit (JDK) will combine the Abstract window Toolkit (AWT) with the IFC.

This combination of classes will be called the Java Foundation Classes (JFC). The IFC is similar to Microsoft's Application Foundation Classes (AFC). Short for Abstract Windows Toolkit, the Java API that enables programmers to develop Java applications with GUI components, such as windows, buttons, and scroll bars. The Java Virtual Machine (VM) is responsible for translating the AWT calls into the appropriate calls to the host operating system. Ideally, the AWT should enable any Java application to appear the same whether it's run in a Windows, Macintosh or UNIX environment. In practice, however, most Java applications look slightly different depending on the platform on which they " re executed.

Generally, the ability to appear in many forms. In object-oriented programming, polymorphism refers to a programming language's ability to process objects differently depending on their data type or class. More specifically, it is the ability to redefine methods for derived classes. For example, given a base class shape, polymorphism enables the programmer to define different circumference methods for any number of derived classes, such as circles, rectangles and triangles. No matter what shape an object is, applying the circumference method to it will return the correct results.

Polymorphism is considered to be a requirement of any true object-oriented programming language (OOPL). The type of polymorphism described above is sometimes called parametric polymorphism to distinguish it from another type of polymorphism called overloading. Refers to the broad subject of managing computer networks. There exists a wide variety of software and hardware products that help network system administrators manage a network. Network management covers a wide area, including: &# 61623; Security: Ensuring that the network is protected from unauthorized users. &# 61623; Performance: Eliminating bottlenecks in the network. &# 61623; Reliability: Making sure the network is available to users and responding to hardware and software malfunctions. 1. A specification for a dynamically created Web page with a.

ASP extension that utilizes ActiveX scripting -- usually VB Script or Jscript code. When a browser requests an ASP page, the Web server generates a page with HTML code and sends it back to the browser. So ASP pages are similar to CGI scripts, but they enable Visual Basic programmers to work with familiar tools. 2. ASP also stands for Application Service Provider Short for Visual Basic Scripting Edition, a scripting language developed by Microsoft and supported by Microsoft's Internet Explorer Web browser.

VBScript is based on the Visual Basic programming language, but is much simpler. In many ways, it is similar to JavaScript. It enables Web authors to include interactive controls, such as buttons and scrollbars, on their Web pages. A self-contained operating environment that behaves as if it is a separate computer.

For example, Java applets run in a Java virtual machine (VM) that has no access to the host operating system. This design has two advantages: &# 61623; System Independence: A Java application will run the same in any Java VM, regardless of the hardware and software underlying the system. &# 61623; Security: Because the VM has no contact with the operating system, there is little possibility of a Java program damaging other files or applications. The second advantage, however, has a downside. Because programs running in a VM are separate from the operating system, they cannot take advantage of special operating system features.

A specification developed by Sun Microsystems that defines how Java objects interact. An object that conforms to this specification is called a Java Bean, and is similar to an ActiveX control. It can be used by any application that understands the JavaBeans format. The principal difference between ActiveX controls and JavaBeans are that ActiveX controls can be developed in any programming language but executed only on a Windows platform, whereas JavaBeans can be developed only in Java, but can run on any platform.

In programming, classification of a particular type of information. It is easy for humans to distinguish between different types of data. We can usually tell at a glance whether a number is a percentage, a time, or an amount of money. We do this through special symbols -- %, : , and $ -- that indicate the data's type. Similarly, a computer uses special internal codes to keep track of the different types of data it processes.

Most programming languages require the programmer to declare the data type of every data object, and most database systems require the user to specify the type of each data field. The available data types vary from one programming language to another, and from one database application to another, but the following usually exist in one form or another: &# 61623; integer: In more common parlance, whole number; a number that has no fractional part. &# 61623; floating-point: A number with a decimal point. For example, 3 is an integer, but 3. 5 is a floating-point number. &# 61623; character (text): Readable text control using ActiveX technologies. An ActiveX control can be automatically downloaded and executed by a Web browser. ActiveX is not a programming language, but rather a set of rules for how applications should share information. Programmers can develop ActiveX controls in a variety of languages, including C, C++, Visual Basic, and Java.

An ActiveX control is similar to a Java applet. Unlike Java applets, however, ActiveX controls have full access to the Windows operating system. This gives them much more power than Java applets, but with this power comes a certain risk that the applet may damage software or data on your machine. To control this risk, Microsoft developed a registration system so that browsers can identify and authenticate an ActiveX control before downloading it. Another difference between Java applets and ActiveX controls is that Java applets can be written to run on all platforms, whereas ActiveX controls are currently limited to Windows environments. Related to ActiveX is a scripting language called VBScript that enables Web authors to embed interactive elements in HTML documents.

Just as JavaScript is similar to Java, so VBScript is similar to Visual Basic. Currently, Microsoft's Web browser, Internet Explorer, supports Java, JavaScript, and ActiveX, whereas Netscape's Navigator browsers support only Java and JavaScript, though plug-ins can enable support of VBScript and ActiveX. Short for Web browser, a software application used to locate and display Web pages. The two most popular browsers are Netscape Navigator and Microsoft Internet Explorer.

Both of these are graphical browsers, which means that they can display graphics as well as text. In addition, most modern browsers can present multimedia information, including sound and video, though they require plug-ins for some formats. A program or group of programs designed for end users. Software can be divided into two general classes: systems software and applications software. Systems software consists of low-level programs that interact with the computer at a very basic level. This includes operating systems, compilers, and utilities for managing computer resources.

In contrast, applications software (also called end-user programs) includes database programs, word processors, and spreadsheets. Figuratively speaking, applications software sits on top of systems software because it is unable to run without the operating system and system utilities. Bibliography: web


Free research essays on topics related to: visual basic, programming language, microsoft internet explorer, netscape navigator, object oriented programming

Research essay sample on Object Oriented Programming Microsoft Internet Explorer

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