1<?xml version="1.0" encoding="utf-8"?> 2<appengine-web-app xmlns="http://appengine.google.com/ns/1.0"> 3 <runtime>java8</runtime> 4 <threadsafe>true</threadsafe> 5 <system-properties> 6 <property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/> 7 </system-properties> 8</appengine-web-app> 9