How to run java code in pc,, give some link to download

Answer 1

ya they are right,
you need to install JDK and check java -version which will display what java version you have installed.
use cmd notepad++ for writing java code if you are familiar with syntax else use the IDE which will autocomplete or suggest what u are expecting.

Netbeans IDE is good for beginner
Eclipse IDE is better for experience one

Answer 2

you need to install JDK for that

http://www.oracle.com/technetwork/java/javase/downloads/index-jsp-138363.html

Answer 3

Google for Java 9, and on the first result, download the JRE and the JDK for Java 9. Follow the instructions there to install and setup.

With Java 9, you get jshell. It will ease and speed up your Java learning experience.

Eclipse, Netbeans, IntelliJ IDEA are all excellent. Read the reviews and pick what you like from there.