引入applet的object标签 传的参数，当applet初始化时为什么参数都为null啊

Question

<OBJECT  classid="clsid:8AD9C840-044E-11D1-B3E9-00805F499D93" WIDTH= 1024   HEIGHT=650  MAYSCRIPT=true NAME="myApplet" codebase="http://java.sun.com/update/1.4.2/jinstall-1_4-windows-i586.cab#Version=1,4,0,0">   
        <PARAM  NAME=MAYSCRIPT   VALUE=true/>       
        <PARAM  NAME="scriptable"   VALUE="false"/>
        <PARAM NAME="type" VALUE="application/x-java-applet;version=1.4">
        <PARAM NAME="url" VALUE="<%=request.getRequestURL()%>" />
<PARAM NAME="stCode" VALUE="${sessionScope['secCode']}" />
<PARAM NAME="indexCode" VALUE="<%=request.getParameter("indexCode")%>" />
<PARAM NAME="selectRadio" VALUE="<%=request.getAttribute("selectRadio")%>" />
<PARAM NAME="lang" VALUE="${sessionScope['lang']}" />
<PARAM NAME="proName" VALUE="<%=request.getContextPath()%>" />
<PARAM NAME= "CODE" VALUE = "com.finet.chart.BocAppletEntry.class" />
　　     <PARAM NAME= "CODEBASE" VALUE = "./applet" />
　　     <PARAM NAME= "ARCHIVE" VALUE  = "test.jar" />
 <comment>
          <EMBED type="application/x-java-applet;version=1.4" CODE="com.finet.chart.AppletEntry.class"  
          CODEBASE ="./applet" ARCHIVE="test.jar" WIDTH= 1024 HEIGHT=650  MAYSCRIPT=true scriptable=false pluginspage="http://java.sun.com/products/plugin/index.html#download">
           <NOEMBED>
           </NOEMBED>
          </EMBED>
          </comment>
        </OBJECT>这个是，引入applet的object标签 传的参数，当applet初始化时为什么参数都为null啊？因为我换成<applet></applet>又没这个问题