When
you start up NetBeans IDE, you're automatically given a Java DB
database named "sample", which unsurprisingly includes some sample
data:
However, you have access to another database, should you need
it, via utilities provided by GlassFish. Right-click the GlassFish
node in the IDE and choose "View Domain Admin Console", as shown
here:
Once the Admin Console has started up in your browser, navigate
to Resources | JDBC | Derby Pool, as shown below:
Click the "Ping" button...