antlr3 software package provides language tool for constructing recognizers, compilers etc, 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 antlr3
antlr3 is installed in your system.
Make ensure the antlr3 package were installed using the commands given below,
$ sudo dpkg-query -l | grep antlr3 *
You will get with antlr3 package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Development |
| Package | antlr3 |
| Version | 3.5.2-4 |
| Description | language tool for constructing recognizers, compilers etc |
| Sub Section | Devel |