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  5<title>Installing the Java Plug-in</title>
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  8<br>
  9<p>
 10<h2>Installing the Java Plug-in</h2>
 11<br>
 12<p>
 13
 14The Laj and Maj applets are written for Java 1.2 (a.k.a.
 15J2SE 1.2), and theoretically any web browser that fully supports
 16this (or any higher version) should work.  However, for best
 17compatibility we recommend that you download and install the official
 18<b>Java Plug-in</b> software from Sun Microsystems.
 19This plug-in generally works with a variety of web browsers,
 20including Internet Explorer, Netscape, and Mozilla.
 21<p>
 22The main overview page for the Java Plug-in product is
 23<a href="http://java.sun.com/products/plugin/">
 24http://java.sun.com/products/plugin/</a>, and an assortment
 25of download links is available at
 26<a href="http://java.sun.com/j2se/downloads/">
 27http://java.sun.com/j2se/downloads/</a>.
 28Sun also provides a simplified download facility (latest version
 29only), which is accessible via the "Download NOW" button at
 30<a href="http://java.com/">http://java.com/</a>.
 31For details about exactly which platforms are supported, see
 32<a href="http://java.sun.com/j2se/1.5.0/system-configurations.html">
 33http://java.sun.com/j2se/1.5.0/system-configurations.html</a>.
 34<p>
 35The plug-in is
 36usually bundled with the Java 2 Runtime Environment (JRE) and the
 37Java 2 Software Development Kit (JDK/SDK).  If you are given a choice
 38between these, either will do; the JRE is smaller because it
 39doesn't include developer tools, but both of them contain the
 40plug-in.  Note that even though Laj does not currently use any Java
 41features beyond 1.2, as of this writing it is compiled with version
 421.3.1 of Sun's SDK, so running it with the corresponding version
 43(or higher) of the plug-in is recommended.  We have, however,
 44observed some drawing anomalies with the 1.4.x series on some
 45platforms (including "phantom repeats" in the symbol panel and
 46failure to draw the zoom box and crosshairs), so you may want to
 47stick with 1.3.x or 1.5.x.
 48<p>
 49Each download should come with installation instructions
 50(read them!), but here are some additional platform-specific
 51tips.
 52<p>
 53
 54<h3>Windows</h3>
 55<p>
 56We recommend that you <b>delete any previously installed versions</b>
 57of the plug-in, JRE, JDK, and/or
 58SDK before you install the new one, to avoid getting them mixed.
 59For example, in Windows 98 you can do this by opening the Start
 60menu and choosing Settings - Control Panel - Add/Remove Programs,
 61then selecting from the list the items you want to uninstall.
 62After the new installation is complete, you may need to close
 63and restart your browser to make it recognize the new plug-in,
 64or even reboot your computer.
 65<p>
 66Note that versions of Sun's Java above 1.3.x will not work on
 67Windows 95.
 68<p>
 69
 70<h3>Macintosh</h3>
 71<p>
 72Currently Sun does not have a Java Plug-in for Macs, but Mac OS X
 73ships with a sufficiently recent version of Java already included,
 74and further updates may be available via Apple's Software Update
 75mechanism (depending on your version of OS X).  We have observed
 76display anomalies in some versions (e.g., red circle has a black
 77background), but Laj et al. should still be usable.
 78For Mac OS Classic, Apple has a Java runtime called MRJ 2.2.5, but
 79unfortunately it only supports Java 1.1.8 (not Java 1.2) and thus
 80will not work with our applets.
 81<p>
 82For more information about Java on the Mac, see
 83<a href="http://www.apple.com/java/">
 84http://www.apple.com/java/</a> and 
 85<a href="http://developer.apple.com/java/">
 86http://developer.apple.com/java/</a>.
 87<p>
 88
 89<h3>Linux</h3>
 90<p>
 91Sun now provides versions of the Java Plug-in for Linux, in
 92either RPM or self-extracting binary format.
 93Be sure to read the installation notes first,
 94for system requirements and detailed instructions.
 95<p>
 96
 97<h3>Solaris</h3>
 98<p>
 99Note that Solaris 8 already includes Java 1.2, though you may
100want to install a newer version.  Sun provides versions of the
101Java Plug-in for Solaris on both Sparc and x86 processors.
102Be sure to read the installation notes first,
103for system requirements and detailed instructions.  In particular,
104note that you may need to apply some Solaris patches to your
105system before installing Java, and possibly obtain additional
106fonts.  You might also want to uninstall any previous versions of
107the plug-in, JRE, JDK, and/or SDK to avoid getting them mixed.  After
108the installation, you may need to close and restart your browser
109to make it recognize the new plug-in.
110<p>
111One last bit of advice: at one point during our installation,
112we were instructed to enter the command &nbsp;<tt>xhost +</tt>&nbsp;,
113but this is a <b>bad idea</b> because it seriously compromises your
114system security.  If this message appears, we recommend using proper
115security protocols instead.
116<p>
117
118<!--
119<h3>Other Platforms</h3>
120<p>
121For availability of the Java Plug-in on other computers, see
122<a href="http://java.sun.com/j2se/1.4/ports.html">
123http://java.sun.com/j2se/1.4/ports.html</a>.
124<p>
125-->
126
127<br>
128<p>
129<hr>
130<i>Cathy Riemer, December 2005</i>
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