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Java example source code file (AppletStub.java)
The AppletStub.java Java example source code/* * Copyright (c) 1995, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package java.applet; import java.net.URL; /** * When an applet is first created, an applet stub is attached to it * using the applet's <code>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 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 <code>start method is called. It becomes * inactive just before its <code>stop method is called. * * @return <code>true if the applet is active; * <code>false 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: * <blockquote>* http://www.oracle.com/technetwork/java/index.html * </pre> * The document base is: * <blockquote>* http://www.oracle.com/technetwork/java/index.html * </pre> * * @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. * * @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 * <blockquote>* <applet code="Clock" width=50 height=50> * <param name=Color value="blue"> * </applet> * </pre> * <p> * then a call to <code>getParameter("Color") returns the * value <code>"blue". * * @param name a parameter name. * @return the value of the named parameter, * or <tt>null if not set. */ String getParameter(String name); /** * Returns the applet's context. * * @return the applet's context. */ AppletContext getAppletContext(); /** * 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); } |
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