$ sudo apt-get update
$ sudo apt-get install libdtd-parser-java 

libdtd-parser-java is installed in your system.

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

$ sudo dpkg-query -l | grep libdtd-parser-java *

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

libdtd-parser-java package basic information: