Learning Java

The <APPLET> Tag

Applets are embedded in HTML documents with the <APPLET> tag. The <APPLET> tag resembles the HTML <IMG> image tag. It contains attributes that identify the applet to be displayed and, optionally, give the web browser hints about how it should be displayed.^[50] The standard image tag sizing and alignment attributes, such as height and width, can be used inside the applet tag. However, unlike images, applets have both an opening <APPLET> and a closing </APPLET> tag. Sandwiched between these can be any number of <PARAM> tags that contain data to be passed to the applet:

<APPLET attribute 
            attribute ... >
    <PARAM parameter >
    <PARAM parameter >
    ...
</APPLET>

Attributes

Attributes are name/value pairs that are interpreted by a web browser or appletviewer. (Many HTML tags besides <APPLET> have attributes.) Attributes of the <APPLET> tag specify general features that apply to all applets, such as size and alignment. The definition of the <APPLET> tag lists a fixed set of recognized attributes; specifying an incorrect or nonexistent attribute should be considered an HTML error.

Three attributes are required in the <APPLET> tag. Two of these attributes, width and height, specify the space the applet occupies on the screen. The third required attribute may be either code or object; you must supply one of these attributes, and you can’t specify both. The code attribute specifies the class file from which the applet is loaded; the object attribute specifies a serialized ...