is jre is important for java and if for what purpose? whether jdk too important to be installed for running.

Answer 1

JRE is Java Runtime Environment while JDK Java Development Kit. The first let's you run .jar compressed programs, but you can't program them, you don't have Java files and API's to develop. If you want to code, download JDK, and JRE is either included in the first!!

Answer 2

jdk for coding

Answer 3

yes!