I wanted to know what exactly is run time environment at system level(operating system). Is it somehow related to the resources required at run time or something else? I saw a similar question posted on a forum, explaining how it is used in java. I have no knowledge of Java, so very little I could derive from the explanation.
Runtime Environment : i'll explain it as a platform which works as a trasporter or communication channel between your program and Operating System.
JRE is an example of that. Java Runtime Environment
It contains all the required libraries to run your .jar or wrapped .jar (an .exe) to run smothly on any system without having JDK (Java Development Kit) installed.
you can go through here for starting understanding.