libhtml5parser-java software package provides validator.nu HTML parser implementation in Java, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libhtml5parser-java
libhtml5parser-java is installed in your system.
Make ensure the libhtml5parser-java package were installed using the commands given below,
$ sudo dpkg-query -l | grep libhtml5parser-java *
You will get with libhtml5parser-java package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Java |
| Package | libhtml5parser-java |
| Version | 1.4+r1.3.1-1 |
| Description | validator.nu HTML parser implementation in Java |
| Sub Section | Java |