Applet Container

Definition of Applet Container

An Applet Container refers to a specialized environment or framework within which applets are executed. Applets are small, self-contained programs, typically written in Java, that can be embedded into web pages or other applications. The Applet Container provides necessary resources and manages the applet’s lifecycle, including its initialization, execution, and termination.


The phonetic pronunciation for “Applet Container” is:/ˈæplɪt kənˈteɪnər/Here it is broken down for you: Applet: ˈæp-lət (AP-lit)Container: kən-ˈtā-nər (kuhn-TAY-nuhr)

Key Takeaways

  1. Applet Container provides a runtime environment for Java applets, allowing them to be executed safely within a web browser or standalone applet viewer.
  2. It is responsible for managing the applet’s lifecycle, providing communication with the browser and ensuring secure access to system resources.
  3. Applet Container is gradually being phased out and replaced by more modern web technologies, such as JavaScript, HTML5, and CSS3, due to security concerns and diminishing support for Java applets in browsers.

Importance of Applet Container

The technology term Applet Container is important because it refers to a specific environment within a web browser or application server designed to securely run and manage small, embedded applications, often called “applets.” Applet containers provide a sandboxed execution environment for applets, enabling them to execute without jeopardizing the security or stability of the user’s system.

This is especially significant for Java applets or web-based interactive components, as they are downloaded from the internet and have the potential to contain malicious code.

Moreover, applet containers handle applet lifecycle events, such as initialization, execution, and termination, ensuring a consistent and streamlined user experience.

In summary, applet containers play a crucial role in delivering secure, stable, and interactive content within web browsers and applications.


An Applet Container serves a crucial purpose in the realm of Java programming, providing a controlled environment within which applets can be executed. As applets are essentially small applications or software components that can be embedded in a webpage or another application, they are designed to execute specific tasks or provide interactive multimedia content. The Applet Container enables seamless integration of these applets while ensuring security and stability of both the applet and the host application.

This powerful feature enriches the user experience by facilitating dynamic content and an interactive environment. Beyond providing a hospitable environment for applets, an Applet Container also takes charge of managing the applet’s lifecycle, communication, and resource allocation. This involves initializing, starting, stopping, and destroying the applet to ensure efficient resource utilization and system performance.

Additionally, it allows applets to communicate with each other, enriching the interactive experience for both the developer and the user. The container’s architecture reinforces applet security by restricting access to certain system functions and resources, creating a safe environment for applets to perform their designated tasks without compromising the user’s data or system integrity. In summary, the Applet Container plays an indispensable role in harnessing the power of applets, bringing a rich array of interactive features and content to applications and webpages alike.

Examples of Applet Container

An applet container is a framework or environment that facilitates the hosting, execution, and management of applets. Applets are small applications delivered over the internet and executed within a web browser, typically using Java, but the term is also applicable to other forms of plugin-based components such as Flash. Here are three real-world examples of applet containers:

Java Applet Container: This is a part of the Java Runtime Environment (JRE) that allows Java applets to run within a web browser. The applet container is responsible for managing the lifecycle of an applet, providing security features to restrict applet capabilities based on security policies, and handling applet-to-browser communication. Common web browsers, such as Google Chrome, Mozilla Firefox, and Microsoft Edge had support for the Java Applet Container (now deprecated) with the help of a Java plugin.

Adobe Flash Player: Flash Player is a browser-plugin-based applet container for the Adobe Flash Platform. It provides rich multimedia content, including animations, vector graphics, and audio and video playback on websites. The Flash Player container processes, displays, and manages Flash content, which is usually embedded in web pages inside SWF (Small Web Format) files. With the rise of more modern and efficient web technologies, such as HTML5, CSS3, and JavaScript, the use of Flash has declined, and Adobe officially discontinued support for Flash Player in December

Oracle Forms: Oracle Forms, a component of Oracle Fusion Middleware, is a software framework used to create and deploy enterprise applications in a browser-based environment. The Oracle Forms applet container, called the Forms Runtime Engine (FRM), is responsible for rendering and managing Oracle Forms applications within web browsers. This allows for the seamless and efficient execution of large-scale, data-driven applications within a browser-based interface.

Applet Container FAQ

What is an Applet Container?

An Applet Container is a specific type of container within the Java programming language that holds and runs small Java programs called Applets. These applets can be embedded within HTML pages to provide dynamic and interactive web content.

How can I create an Applet Container?

To create an Applet Container, you need to create a Java Applet class and implement it in your HTML code using the <applet> or <object> tag. Once added to the HTML file, the applet will run within its own container in the web browser.

What is the difference between an Applet Container and a web browser?

An Applet Container is a part of a web browser that specifically handles running Java applets. The web browser is the larger application responsible for rendering and displaying web pages, of which the Applet Container is only one component.

Can I run multiple applets within a single Applet Container?

Yes, you can run multiple applets within a single Applet Container by including multiple <applet> or <object> tags in your HTML code, each with a reference to a different applet. Each applet will run independently within the container.

Are Applet Containers still widely used today?

Due to the decline in the popularity of Java applets and the rise of new web development technologies, Applet Containers are not as widely used today. However, they may still be found in some legacy applications and websites.

Related Technology Terms

  • Java Virtual Machine (JVM)
  • Application Programming Interface (API)
  • Sandbox Security Model
  • Java Run-Time Environment (JRE)
  • Java Applet Class

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