I had to download and open the Xalan package from a mirror site at http://www.apache.org/dyn/closer.cgi/xml/xalan-j.
I had to set the class path in DOS. I read http://java.sun.com/j2se/1.5.0/docs/tooldocs/windows/classpath.html to find the command.
set CLASSPATH=C:\xalan-j_2_7_1\xalan.jar;C:\xalan-j_2_7_1\serializer.jar;C:\xalan-j_2_7_1\xml-apis.jar;C:\xalan-j_2_7_1\xercesImpl.jar
You have to set each path you need and seperate them with semicolons (;). I read http://xml.apache.org/xalan-j/getstarted.html to find which .jar files I needed in the path. Then I dug through my computer to find them. Another note, the path needs to be set each time you run DOS.
Finally, I was able to run the Hello World transform that I found at http://docstore.mik.ua/orelly/xml/xslt/ch02_02.htm.
greeting.xml:
<?xml version="1.0"?> <greeting> Hello, World! </greeting>
greeting.xsl:
<xsl:stylesheet
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:output method="html"/>
<xsl:template match="/">
<xsl:apply-templates select="greeting"/>
</xsl:template>
<xsl:template match="greeting">
<html>
<body>
<h1>
<xsl:value-of select="."/>
</h1>
</body>
</html>
</xsl:template>
</xsl:stylesheet>
Use the command
java org.apache.xalan.xslt.Process -in greeting.xml -xsl greeting.xsl -out greeting.html
And it worked!
greeting.html:
<html> <body> <h1> Hello, World! </h1> </body> </html>