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Continue installing the patches one-by-one until all patches
have successfully installed. The user's guide provides a list
of required and suggested patches and links to where you can
download additional suggested patches if you want to install them.

<A NAME="netscape"></A>
<H3>Install Netscape Communicator</H3> 

The extracted Netscape Communicator 4.5.1 files provide a user's guide
in the 
<CODE>/home/monicap/NETSCAPE/Netscape_Communicator_4.51/<BR>
common/Docs/en</CODE>
directory that explains the installation.
The following command sequence is one easy way to do it with the
<CODE>pkgadd</CODE> command. By default, the installation puts
Netscape Communicator in the <CODE>/opt/NSCPcom</CODE> directory
where your Java Plug-In and patches are also installed. 

<P>
When you extracted the <CODE>NSCPcom_webstart_sparc.tar.Z</CODE>
download, it placed the files in a <CODE>NETSCAPE</CODE> directory.
From the <CODE>NETSCAPE</CODE> directory, execute the following 
command sequence:
 
<PRE>
  cd ~/NETSCAPE/Netscape_Communicator_4.51/sparc/Product
  su
  &lt;password&gt;
  pkgadd -d .
</PRE>

<A NAME="check"></A>
<H3>Check the Installation</H3>

There are two ways to check your Java Plug-In, patch, and 
Netscape Communicator installation.  

<OL>
<LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Open the Netscape Help menu and select About Plug_Ins.
You will see a list of Mime types. Check this list against
the list presented in the user's guide. If your mime types
are correct, the installation is correct and complete.</FONT>

<P>
<LI><FONT FACE="Verdana, Arial, Helvetica, sans-serif">Start the control panel applet by loading the 
<CODE>/opt/NSCPcom/j2pi/ControlPanel.html</CODE> file.
If the applet starts, the installation is correct and
complete.</FONT>
</OL>

The control panel lets you change the default
settings used by Java Plug-In at startup. All applets
running inside Java Plug-In use these settings.

<PRE>
  cd /opt/NSCPcom/j2pi
  ControlPanel &amp;
</PRE>

<A NAME="convert"></A>
<H3>Convert HTML Files</H3>ME="convert"
<H3>Install the HTML Converter</H3>

Your browser will not automatically use the
Java Plug-In when you load an HTML file with an applet.
You have to download and run the Java Plug-In HTML Converter
on the HTML page that invokes the applet to direct
the applet ro run using the
plug-in instead of the browser's default runtime.

<P>
Unzip the Java Plug-In HTML Converter download:

<PRE>
  unzip htmlconv12.zip
</PRE>

Add the <CODE>HTMLConverter.java</CODE> program or its
directory to your <CODE>CLASSPATH</CODE>.

<A NAME="security"></A>
<H3>Security Policy File</H3>

The auction application uses an applet running in a browser for administrative
operations. In the Java<FONT SIZE="-2"><SUP>TM</SUP></FONT> 2 platform, applets are restricted to a
sandbox-like environment and need permission to access system resources
outside their restricted environment. Applets are restricted to read
operations within their local directory. All other access operations
require permission.

<A NAME="types"></A>
<H4>Types of Policy Files</H4>

You need a policy file to grant access permissions to the
Administration applet. If the applet runs on a disk other
than the disk where the browser is running, the applet will
also need to be signed.  See 
<A HREF="signed.html">Signed Applets</A> for information
on signing and deploying applets. 

<P>
There are three kinds of policy files: 
system, user, and program.
The system policy file is located in
<CODE>jdk1.2/jre/lib/security/java.policy</CODE> or
<CODE>jre1.2/lib/security/java.policy</CODE> and contains
permissions for everyone on the system. 

<P>
The user policy file is located in the user's home directory.
The user policy file provides a way to give certain users
additional permissions over those granted to everyone on
the system. The permissions in the system file are combined with
the permissions in the user file.

<P>
A program policy file can be located anywhere. It is
specifically named when an application is invoked
with the <CODE>java </CODE> command or when an applet
is invoked with applet viewer. When an application or
applet is invoked with a specific policy file, the permissions
in that policy file take the place of (are not combined with)
permissions specified in the system or user policy file.
Program policy files are used for program testing or
intranet deployment of applets and applications.

<A NAME="file"></A>
<H4>Installing the Policy File</H4>

Place the security policy file in your home directory and name
it <CODE>.java.policy</CODE>. When the applet tries to perform an action that
requires a policy file with a permission, the policy file is loaded from this
directory and remains in effect until you exit and restart the browser.

<P>
If an applet tries to perform an access operation without the right
permission, it quietly quits without raising  either an applet or
a browser error.

<A NAME="change"></A>
<H4>Changing the Name or Location</H4>

You can change the name and/or location of the default system or
user policy file. Edit the  <CODE>jdk1.2/jre/lib/security/java.security</CODE>
or <CODE>jre1.2/lib/security/java.security</CODE>
file and add a third entry specifying the name and location
of an alternative policy file. 

<PRE>
  policy.url.1=
    file:${java.home}/lib/security/java.policy
  policy.url.2=file:${user.home}/.java.policy
  policy.url.3=file:/&lt;mypolicyfile path and name&gt;
</PRE>

<A NAME="run"></A>
<H3>Run the Administration Applet</H3>

Copy the Java Archive (JAR) file with the Administration
applet and policy file to its final location. In this
example, that location is the <CODE>/home/zelda/public_html</CODE>
directory. Next, extract the applet class file and policy file 
from the JAR file:

<PRE>
  cp admin.jar /home/zelda/public_html
  jar xf applet.jar
</PRE>

The extraction places the policy file under <CODE>public_html</CODE>
and creates an <CODE>admin</CODE> directory under
the <CODE>public_html</CODE> directory with the
applet class file in it. Rename the policy file in the
<CODE>public_html</CODE> directory to
<CODE>.java.policy</CODE> and copy it to your home directory.

<P>
In the <CODE>public_html</CODE> directory, create an HTML file that invokes 
the Administration applet class. Be sure to include the <CODE>admin</CODE>
directory when you specify the applet class to the <CODE>CODE</CODE> option.
Note that when using Java Plug-In, you cannot have the browser
load the class file from the Java Archive (JAR) file.

<PRE>
&lt;HTML&gt;
&lt;BODY&gt;
&lt;APPLET CODE=admin/AdminApplet.class
  WIDTH=550
  HEIGHT=150&gt;
&lt;/APPLET&gt;
&lt;/BODY&gt;
&lt;/HTML&gt;
</PRE>

Start the HTML Converter.

<PRE>
  java HTMLConverter
</PRE>

In the HTML Converter graphical user interface, select <CODE>One File:</CODE>,
specify the path to the <CODE>admin.html</CODE> file,
and click the <CODE>Convert</CODE> button.

<P>
<IMG SRC="./Art/ConvertSol.gif" WIDTH="450" HEIGHT="309">

<P>
After the conversion completes, load the <CODE>admin.html</CODE> 
file in your browser.

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