ProblemYou want to use the Java Plug-in HTML Converter tool to generate the tags for embedding an applet. SolutionUse the HTML Converter tool within htmlconverter.jar , which is located in the lib directory of the directory where you have the Java SDK installed. DiscussionA busy developer can let the Java Plug-in HTML Converter tool produce the HTML tags that are responsible for loading Java applets. The Java Plug-in is a Java-based tool that allows applets to be run in the Sun Microsystems Java 2 runtime environment, rather than within the web browser's Java runtime environment. The Java Plug-in is installed on your machine when you install the JRE, including the installation of the SDK. The HTML Converter tool will convert a specified JSP file that contains an applet HTML tag, replacing the applet tag with a more complex tag collection that allows most browsers to load the Java applet. The Converter leaves the rest of your JSP code untouched; it only replaces the JSP's applet tag. Here is how to use the HTML Converter tool:
Figure 17-2. The HTML Converter (GUI version)
Example 17-4 shows the code that replaced the applet tag in Example 17-3 (in bold font), as well as the code that the converter tool did not modify. Example 17-4. The object and embed tags produced by the HTML Converter <%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %> <jsp:useBean id="date" class="java.util.Date" /> <html> <head><title>A Clock in a JSP</title></head> <body> <h2>The time...</h2> <!--"CONVERTED_APPLET"--> <!-- HTML CONVERTER --> <OBJECT classid = "clsid:8AD9C840-044E-11D1-B3E9-00805F499D93" codebase = "http://java.sun.com/products/plugin/autodl/jinstall-1_4-windows- i586.cab#Version=1,4,0,0" > <PARAM NAME = CODE VALUE = "Clock.class" > <PARAM NAME = CODEBASE VALUE = "http://localhost:8080/home/applets" > <PARAM NAME = "type" VALUE = "application/x-java-applet;version=1.4"> <PARAM NAME = "scriptable" VALUE = "false"> <COMMENT> <EMBED type = "application/x-java-applet;version=1.4" CODE = "Clock.class" JAVA_CODEBASE = "http://localhost:8080/home/applets" scriptable = false pluginspage = "http://java.sun.com/products/plugin/index.html#download"> <NOEMBED> </NOEMBED> </EMBED> </COMMENT> </OBJECT> <!-- <APPLET CODE = "Clock.class" JAVA_CODEBASE = "http://localhost:8080/home/applets"> </APPLET> --> <!--"END_CONVERTED_APPLET"--> <br /><c:out value="${date}"/> </body> </html>
See AlsoThe Java Plug-in technology page: http://java.sun.com/products/plugin/; Recipe 17.1 on embedding a Java applet using the jsp:plugin standard JSP action. |