$ sudo apt-get update
$ sudo apt-get install libjsyntaxpane-java 

libjsyntaxpane-java is installed in your system.

Make ensure the libjsyntaxpane-java package were installed using the commands given below,

$ sudo dpkg-query -l | grep libjsyntaxpane-java *

You will get with libjsyntaxpane-java package name, version, architecture and description in a table

libjsyntaxpane-java package basic information: