https://openjdk.java.net/ 
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * particular file as subject to the "Classpath" exception as provided
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * accompanied this code).
 *
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package java.applet;

import java.net.URL;


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.

Author:     Arthur van Hoff
See Also:
Since:      JDK1.0
/**
 * When an applet is first created, an applet stub is attached to it
 * using the applet's <code>setStub</code> method. This stub
 * serves as the interface between the applet and the browser
 * environment or applet viewer environment in which the application
 * is running.
 *
 * @author      Arthur van Hoff
 * @see         java.applet.Applet#setStub(java.applet.AppletStub)
 * @since       JDK1.0
 */
public interface AppletStub {
    
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.
/**
     * Determines if the applet is active. An applet is active just
     * before its <code>start</code> method is called. It becomes
     * inactive just before its <code>stop</code> method is called.
     *
     * @return  <code>true</code> if the applet is active;
     *          <code>false</code> otherwise.
     */
    boolean isActive();


    
Gets the URL 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/index.html



See Also:
Returns: the URL of the document that contains the applet.
/**
     * Gets the URL of the document in which the applet is embedded.
     * For example, suppose an applet is contained
     * within the document:
     * <blockquote><pre>
     *    http://java.sun.com/products/jdk/1.2/index.html
     * </pre></blockquote>
     * The document base is:
     * <blockquote><pre>
     *    http://java.sun.com/products/jdk/1.2/index.html
     * </pre></blockquote>
     *
     * @return  the {@link java.net.URL} of the document that contains the
     *          applet.
     * @see     java.applet.AppletStub#getCodeBase()
     */
    URL getDocumentBase();

    
Gets the base URL. This is the URL of the directory which contains the applet.

See Also:
Returns: the base URL of the directory which contains the applet.
/**
     * Gets the base URL. This is the URL of the directory which contains the applet.
     *
     * @return  the base {@link java.net.URL} of
     *          the directory which contains the applet.
     * @see     java.applet.AppletStub#getDocumentBase()
     */
    URL getCodeBase();

    
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".

Params:
  • name –   a parameter name.
Returns: the value of the named parameter,
or null if not set.
/**
     * Returns the value of the named parameter in the HTML tag. For
     * example, if an applet is specified as
     * <blockquote><pre>
     * &lt;applet code="Clock" width=50 height=50&gt;
     * &lt;param name=Color value="blue"&gt;
     * &lt;/applet&gt;
     * </pre></blockquote>
     * <p>
     * then a call to <code>getParameter("Color")</code> returns the
     * value <code>"blue"</code>.
     *
     * @param   name   a parameter name.
     * @return  the value of the named parameter,
     * or <tt>null</tt> if not set.
     */
    String getParameter(String name);

    
Returns the applet's context.

Returns: the applet's context.
/**
     * Returns the applet's context.
     *
     * @return  the applet's context.
     */
    AppletContext getAppletContext();

    
Called when the applet wants to be resized.

Params:
  • width –    the new requested width for the applet.
  • height –   the new requested height for the applet.
/**
     * Called when the applet wants to be resized.
     *
     * @param   width    the new requested width for the applet.
     * @param   height   the new requested height for the applet.
     */
    void appletResize(int width, int height);
}