AppletStub (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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Java^TM 2 Platform
Std. Ed. v1.4.1

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java.applet
Interface AppletStub

public interface AppletStub

When an applet is first created, an applet stub is attached to it using the applet's setStub method. This stub serves as the interface between the applet and the browser environment or applet viewer environment in which the application is running.

Since:: JDK1.0
See Also:: Applet.setStub(java.applet.AppletStub)

Method Summary

void appletResize(int width, int height)
          Called when the applet wants to be resized.

AppletContext getAppletContext()
          Gets a handler to the applet's context.

URL getCodeBase()
          Gets the base URL.

URL getDocumentBase()
          Returns an absolute URL naming the directory of the document in which the applet is embedded.

String getParameter(String name)
          Returns the value of the named parameter in the HTML tag.

boolean isActive()
          Determines if the applet is active.

Method Detail

isActive

public boolean isActive()

Determines if the applet is active. An applet is active just before its start method is called. It becomes inactive just before its stop method is called.

Returns:: true if the applet is active; false otherwise.

getDocumentBase

public URL getDocumentBase()

Returns an absolute URL naming the directory of the document in which the applet is embedded. For example, suppose an applet is contained within the document:

    http://java.sun.com/products/jdk/1.2/index.html

The document base is:

    http://java.sun.com/products/jdk/1.2/

Returns:: the URL of the document that contains this applet.
See Also:: getCodeBase()

getCodeBase

public URL getCodeBase()

Gets the base URL.

Returns:: the URL of the applet.

getParameter

public String getParameter(String name)

Returns the value of the named parameter in the HTML tag. For example, if an applet is specified as

 <applet code="Clock" width=50 height=50>
 <param name=Color value="blue">
 </applet>

then a call to getParameter("Color") returns the value "blue".

Parameters:: name - a parameter name.
Returns:: the value of the named parameter, or null if not set.

getAppletContext

public AppletContext getAppletContext()

Gets a handler to the applet's context.

Returns:: the applet's context.

appletResize

public void appletResize(int width,
                         int height)

Called when the applet wants to be resized.

Parameters:: width - the new requested width for the applet.; height - the new requested height for the applet.