Between Runtime and compile time jdk version , which one can be greater
Which one of the two, runtime version and compile time version of a java program or a jar, should be greater or equal to the other?
Edit : Also what should be the version of JRE System Library?
Solution
So, my understanding is that you are compiling a java application with jdk1.6 and running the same application on a runtime which is based on jdk1.8. (for example, it could jdk1.7 too here)
Generally, JDK/JRE would be designed in such a way that it is backwards-compatible.
It would be better to use a runtime environment version (JVM) that is greater than or equal to the compile version and not vice-versa.