You can find instructions at https://jaxp.java.net/.
% javac -classpath jaxp-root/dom.jar:jaxp-rootjaxp-api. \ jar:jaxp-rootsax.jar:jaxp-rootxalan.jar:jaxp-root/xercesImpl \ .jar:jaxp-root/xsltc.jar -sourcepath . source-filename.java
where jaxp-root is the absolute or relative path to the directory in which the JAXP jar files are located and source-filename is the name of your Java source file.
A classpath in your compilation command line ensures that the compiler can find the JAXP classes.
Note that the first path in the classpath is the current directory.
% java -cp .:jaxp-root/dom.jar:jaxp-rootjaxp-api. \ jar:jaxp-rootsax.jar:jaxp-rootxalan.jar:jaxp-root/xercesImpl \ .jar:jaxp-root/xsltc.jar source-filename arguments
Now that your environment is configured, you can develop your application.