Install libsimple-validation-java by entering the following commands in the terminal:
sudo apt update sudo apt install libsimple-validation-java
Description:
library for quickly adding validation code to Swing user-interfaces
This is a simple library for retrofitting user-interface input validation to Swing applications. It handles validating user input when the user changes a component's value, showing error messages and decorating components to indicate which component is the source of the problem. It contains a large number of built-in validators to handle most common situations, such as validating numbers, email addresses, urls and so forth.
Homepage: http://kenai.com/projects/simplevalidation/pages/Home
Version: 0.9-2
Section: universe/java