Run the jar tool without arguments to see its usage. You pass it the -M option to create a JAR without a manifest. You won't be able to run the JAR file with java -jar, but you will still be able ...

Oracle says that starting with April 18, 2017, Java (JRE) will treat all JAR files signed with the MD5 algorithm as unsigned, meaning they'll be considered insecure and blocked from running.

Being a newbie Java person, the concept of classpath is still, well, new to me.<BR><BR>Also, uhmmm, playing with the getResourceAsStream () method (and subsequently the getResource () method), I ...