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Graphical User Interface

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A Graphical User Interface (GUI) is primarily defined as an interface using which an end user would be able to actively interact with various electronic devices including hand-held devices, computers, and other similar applications. The interface would make extensive usage of numerous elements such as menus, icons, and visual indicators with an objective of displaying information to the end user and collecting the appropriate input. In contrast to text-based interfaces, the GUIs are more prominent and widely used primarily because of the ease of usage. GUI inputs could be actively manipulated with the help of various pointing devices including trackballs and mouse along with touch-based inputs which include touch-screen or stylus.

The overall need for GUI arose because of one of the earliest interfaces known as DOS Prompt. Various commands were typed upon the command line interface which executed them to generate an appropriate response. Further, the usage of such interfaces required the users to learn and remember appropriate syntax and spelling which was highly difficult at certain times. Thus, the GUIs provide end users with an easy and efficient way of communicating with the system in order to request and accept response.  

Creation of standard GUIs
There are a wide range of programming languages and tools which could be used for the purpose of creating effective GUIs which prompt the user for some input and provide appropriate output as expected by the user. One of the most prominent methods of developing and implementing a GUI is to make use of JavaFX or Java Swing. Both tools provide a wide range of tools to create highly interactive and informative GUIs. Java Swing is defined as extremely lightweight GUI toolkit which has an inclusion of large number of widgets.

Moreover, Java Swing also includes various packages which allow the end user to create GUI components for various java application. One of the most important features of Java Swing is that it is platform independent and can be used on any operating system. The Java Swing library is primarily built upon AWT which expands to Java Abstract Widget Toolkit which is an older and highly platform dependent toolkit for the development of GUI. Various components in the Java GUI library such as text box, buttons, check boxes, radio box could be extracted from the library without the specific need to create the same multiple times. For the development of GUI, it becomes essential to have sufficient and necessary information regarding container classes.

The container classes are defined as the classes which can have an inclusion of various components on it. For the effective creation of a GUI, there needs to be presence of at least one container object. However, there are three different types of containers present in the Java Swing. Each container has been explained below –
• The panel is defined as a pure container which is not a window in itself. The prime and sole purpose of the panel is to organize various components to a singular window.
• Secondly, frame is defined as a fully functioning window which has inbuilt icons and titles in it.
• The third type of container classes are Dialog which are defined as pop-up windows which comes into existence when a singular message has to be displayed. However, dialog is not fully functioning window like frame.

Use of Java Swing
The prime purpose and usage of Java Swing are to create an effective and interactive GUI which effectively and actively interacts with the end user. It is highly useful than the original and standard AWT. Swing is also defined as set of program components specifically for Java programmers which provides an extensive ability to create various graphical components in the most effective and optimal manner.

Basic are mostly used along with Java Foundation classes named as JFC. A large number of features are provided by Java Swing but the ability to pluggable look and feel along with lightweight capability are the most widely used advanced features. Different components of Swing are highly lightweight as they are written in Java and do not possess any degree of dependency on various native peers and platforms. Hence, Java Swing could be appropriately used with an objective of creating highly efficient and interactive GUIs to enhance the user ability to interact with system.

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