Import java.awt.* // To import the Button classīutton b1,b2 // Create two Button objectsī1 = new Button ("Welcome") // One button is initializedī2 = new Button ( ) // Second default buttonĪdd (b2) // Add second button to the applet. Illustration 7.1 (A) // To create a button // Readers are advised to test the illustrations. When an object is created and initialized, it then can be placed on an applet by the add() method this method is defined in their corresponding classes.įollowing are 11 samples for illustrations of using these component. Each class have their own constructors for initialization of the objects. The main idea of using these classes is that to create the object of their type. We will restrict our discussion with the following basic components: Following two subsections are to explore these two things. On the other hand, Layout Managers is the group of classes which are important for managing layout within window in various ways. These classes are very much powerful to deal with buttons, menus, sliders, text field and etc. The Components is a group of classes which belong to the class Component. ![]() The Layout managers and Components are known to be very popular to Java GUI programming. However, we will pick up only few (those are marked in bold type) of them as a token and will be illustrated their application.įigure 7.1 : Abstract Windowing Toolkit Package Hierarchy This package is so vast that it is not possible to discuss in this Chapter about each class and to illustrate their uses. A basic overview of this package is shown in the Figure 7.1. It is an Object Oriented Graphical User Interface (GUI) frame work that allows the application developer to design modern, mouse controlled, graphical application interfaces. Java provides a package of classes called the Abstract Windowing Toolkit (or also called the Advanced Window Toolkit ), which we will simply refer to as the AWT. ![]() Java is a very powerful programming language to develop varieties of applications and makes the application development easy. Chapter 7 - Application Development in Java Chapter 7 Application Development in Javaĭesigning GUI with Components and Layout Managers
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