getting compile error for diamond operator in idea ide

diamond-operator, intellij-idea, java

Solution

You need to set the project language level (default for all modules) and the module(s) language level

Problem

I am getting this error while trying to compile some simple source code in idea ide. ``` java: diamond operator is not supported in -source 1.6 (use -source 7 or higher to enable diamond operator) ``` jdk is 1.7.40 from oracle but where is this place to add this "-source 7" option? i tried adding in ide settings but that had no effect.

Original source