Open the Netbeans software and open the Java project you want to use to connect to the database. When you open a project, a list of files and folders display in the left navigation panel.

This TOTD ( T ip O f T he D ay) shows how to create a Persistence Unit (PU) for a MySQL database using NetBeans IDE. This PU can then be used in any of Java EE artifacts (JSP, Servlet, EJB ...