io.github.vasiliygagin:dbunit
· dbUnit is a JUnit extension (also usable from Ant and Maven) targeted
for database-driven projects that, among other things, puts your
database into a known state between test runs. This is an excellent way
to avoid the myriad of problems that can occur when one test case
corrupts the database and causes subsequent tests to fail or exacerbate
the damage.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window dbunit-2.10.0.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.