I've got a problem that I'm stuck on. How do I programmatically get the executing jar file's absolute path?I'm trying to look for a folder that is relative to the jar file's directory but I'm ...

Newer versions of Java now require all JAR files to be signed with a valid code-signing key, and starting with Java 7 Update 51, unsigned or self-signed applications are blocked from running.

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.