Java Applet Architecture

A Java applet is a special kind of Java program that a browser enabled with Java technology can download from the internet and run. An applet is typically embedded inside a web page Applet Architecture An applet is a window-based program. As such, its architecture is different from the so-called normal, console-based programs .

An applet is a Java program that can be embedded into a web page. It runs inside the web browser and works on the client side. An applet is embedded in an HTML page using the APPLET or OBJECT tag and hosted on a web server. The Applet Container manages the entire life cycle of an applet. All applets are sub-classes either directly or

The first import statement is for the Abstract Window Toolkit AWT classes. Applets interact with the user through the AWT and not through the console-based IO classes. An applet must be a subclass of the java.applet.Applet class. The Applet class provides the standard interface between the applet and the browser environment.

A Java applet is a special kind of Java program that a browser enabled with Java technology can download from the internet and run. An applet is typically embedded inside a web page and runs in the context of a browser. An applet must be a subclass of the java.applet.Applet class. The Applet class provides the standard interface between the

The Applet class provides a framework for applet execution, defining methods that the system calls when milestones -- major events in an applet's life cycle -- occur. Most applets override some or all of these methods to respond appropriately to milestones. Methods for Drawing and Event Handling

The java.applet.Applet class 4 life cycle methods and java.awt.Component class provides 1 life cycle methods for an applet. java.applet.Applet class. For creating any applet java.applet.Applet class must be inherited. It provides 4 life cycle methods of applet. public void init is used to initialized the Applet. It is invoked only once.

As you will see in later chapters, applets can contain various controls, such as push buttons and check boxes. When the user interacts with one of these controls, an event is generated. While the architecture of an applet is not as easy to understand as that of a console-based program, Java makes it as simple as possible.

Runtime architecture for Java programs that connect to a database. The Java application makes calls to the JDBC driver, You can also use the time series Java classes in Java applets and servlets, as shown in the following figures. Figure 2. Runtime architecture for a Java applet.

These import statements bring the classes into the scope of our applet class . java.applet.Applet java.awt.Graphics Without those import statements, the Java compiler would not recognize the classes Applet and Graphics, which the applet class refers to. The Applet Class. Every applet is an extension of the java.applet.Applet class. The

An applet is a window based programming environment. So applet architecture is different than console base program. Java applets are essentially java window programs that can run within a web page.Applete programs are java classes that extend that java.applet.Applet class and are enabaled by reference with HTML page.