title: i can't set JDK 1.8 in AndroidStudio
body: <p>I have downloaded and installed jdk 1.8, but when i try to set path to jdk 1.8 in ProjectStructure -> JDK Location, AndroidStudio ignored it, so after set path 
  <a href="https://i.stack.imgur.com/FLndr.png" rel="noreferrer"><img src="https://i.stack.imgur.com/FLndr.png" alt="enter image description here"></a>
  click OK and reopen window "ProjectStructure" i see jdk 1.7 again
  <a href="https://i.stack.imgur.com/uRvcp.png" rel="noreferrer"><img src="https://i.stack.imgur.com/uRvcp.png" alt="enter image description here"></a></p>