diff -Naur --strip-trailing-cr xslthl-2.1.3.orig/highlighters/java-hl.xml xslthl-2.1.3/highlighters/java-hl.xml
--- xslthl-2.1.3.orig/highlighters/java-hl.xml 2017-10-13 08:19:39.411638733 +0200
+++ xslthl-2.1.3/highlighters/java-hl.xml 2017-10-13 08:20:33.166950249 +0200
@@ -66,6 +66,7 @@
</highlighter>
<highlighter type="keywords">
<keyword>abstract</keyword>
+ <keyword>assert</keyword>
<keyword>boolean</keyword>
<keyword>break</keyword>
<keyword>byte</keyword>
@@ -79,6 +80,7 @@
<keyword>do</keyword>
<keyword>double</keyword>
<keyword>else</keyword>
+ <keyword>enum</keyword>
<keyword>extends</keyword>
<keyword>final</keyword>
<keyword>finally</keyword>
Thanks for the hint, I committed an update to the "java-hl.xml" from the SVN repository of the project.