I\'m using IntelliJ IDEA Ultimate 2016.2.1, have set Project SDK to my 1.8 version, Project Language Level to 8, Module SDK to my 1.8 version, and JDK home path to /Library/Java
Hey @Calicoder just try to make change your Java compiler version into 1.7 or 1.8 as mentioned below
Thanks hope this will help.
I have found that IntelliJ sometimes defaults modules to language levels that don't match the set project SDK. Try right clicking on the module in the project explorer and select module settings and then the language level tab. If that is set to Java 5 then update it to Java 8.
Make sure your try-with-resources is using the correct semantics. For instance, this:
try (new BufferedReader(request.getReader())) {
}
will produce that same error message.