install and switch between java 7 and java 8 in windows

Question

I am on widows and also using eclipse. Currently I am using java 7. Now I want to use java 8. but i cannot uninstall java 7 as some of my old projects are working in java 7.

So how can I install both java version at same time and switch between these versions.

I want only some particular projects will use java 8.

Answer 1

Install both JDKs in your system and for any project if you want to use jdk 1.8. Do this

Right click on that project->Properties->java complier->set compliance level to 1.8