Steps to Implement EventListener Applet

The folder view of the project is shown in the below image.

Step 1: We need to check the Java version by running the below command in the terminal:

Step 2: First, create the file as ListenerApplet.java and enter the code into it.

Step 3: Once the code is been inserted then we need to create the ListenerApplet.html file, through which we will display the output.

HTML




<!DOCTYPE html>
<html>
<head>
    <title>Listener Applet</title>
</head>
<body>
    <applet code="ListenerApplet.class" width="300" height="300">
    </applet>
</body>
</html>


Step 4: Then we need to compile the Java code using the below command. We can see that the new .class file is been generated.

javac ListenerApplet.java

Step 5: Now finally we need to run the application using the below command:

appletviewer ListenerApplet.html

How to Create an Event Listener in Applet?

In this article, we will be creating the event Listener in the Applet window. Here, we will use the ActionListener on Button and MouseListener when the event has occurred through mouse activities.

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Approach for Implementing Event Listener Applet

We need to import the essential packages like Applet and AWT for customization. When the packages get imported, then we need to create the class that implemented the ActionListener and MouseListener interface in Java. When the class gets created, then we need to initiate and create the GUI components which will be displayed on the Applet Window. These components are Buttons, Messages, etc. After the initialization of the components is done, we need to define the init() method, which will be used to make the components applied on the Applet window by customizing their colors, font, size, etc. Then mainly, we will apply the event listeners like actionPerformed() on the button. If the button is been clicked, the shape is been filled with a random color. Additionally, there is MouseListener, which has various methods to perform events like mouseClick, mouseEntered, mouseExited, etc....

Steps to Implement EventListener Applet

The folder view of the project is shown in the below image....

Program to Create Event Listener using Applet

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