Hi PlantUML team,
I have Java 6 ( JRE 1.6.x ) on my machine. (no JDK, just JRE).
Recently I was trying to download new versions of PlantUML.jar from your repository (files category), and it I was surprised to discover that while version plantuml.1.2021.3.jar (from March this year) is still compatible with Java 6, the next versions (from April this year) plantuml.1.2021.4.jar and later suddenly require Java 7 ,,,
If there is a good technical reason for this and you must use JDK 7 functionality to compile and and create the PlantUML JAR I can understand (I hope there is good explanation).
However, if this change in the way you compile and create the Jar was done without much thinking (that your customers and developers may still be using Java 6 (JRE 1.6) ), and that practically you can still create new PlantUML Jars with JDK 6, I would request you to fix that as soon as you can, and that new versions from now on will be compatible to run on JRE 1.6 like they used to be till March this year.
Please don't ask me and others to upgrade Java on our machines unless there is real good reason why suddenly PlantUML must be compiled from your side with JDK 7.