java useful samples jdk-api format date to String parse string to date create tmp file and all lines as string read a file and display all lines persistence Using jpa hibernate junit 5 and mockito dbunit : init test database from an xml dataset csv Using apache-commons-csv : read and produce a csv file Using opencsv : read and produce csv with annotations resteasy coming soon ! pdf coming soon excel coming soon base64 coming soon security coming soon web project skeleton deployed to wildfly coming soon maven plugins : must have in your maven project coming soon