This optional attribute specifies the base URL of the applet -- the directory or folder that contains the applet's code. If this attribute is not specified, then the document's URL is used.

code = appletFile

This required attribute gives the name of the file that contains the applet's compiled Applet subclass. This file is relative to the base URL of the applet. It cannot be absolute.

alt = alternateText

This optional attribute specifies any text that should be displayed if the browser understands the APPLET tag but can't run Java applets.

name = appletInstanceName

This optional attribute specifies a name for the applet instance, which makes it possible for applets on the same page to find (and communicate with) each other.

width = pixels
height = pixels

These required attributes give the initial width and height (in pixels) of the applet display area, not counting any windows or dialogs that the applet brings up.

align = alignment

This attribute specifies the alignment of the applet. This attribute is defined in exactly the same way as the IMG element. The permitted values are: top, middle, bottom, left and right. The default is bottom.

vspace = pixels
hspace = pixels

These optional attributes specify the number of pixels above and below the applet (VSPACE) and on each side of the applet (HSPACE). They're treated the same way as the IMG element's VSPACE and HSPACE attributes.