Eclipse Updating the compiler compliance to 1.7

Question

I am having some trouble updating the compiler compliance of my eclipse workspace (I am actually using RTC, but it is essentially eclipse). Currently, it uses a jdk of 1.6 so I

Answer 1

Right click on project you have in use, click on Properties,

enter image description here go on "Compiler compilance level", and select 1.8

enter image description here