--- jsr166/build.xml	2020/06/19 17:40:45	1.316
+++ jsr166/build.xml	2020/09/15 19:09:50	1.320
@@ -141,7 +141,7 @@
   <property name="java12.docroot.url" value="https://docs.oracle.com/en/java/javase/12/docs"/>
   <property name="java13.docroot.url" value="https://docs.oracle.com/en/java/javase/13/docs"/>
   <property name="java14.docroot.url" value="https://docs.oracle.com/en/java/javase/14/docs"/>
-  <property name="java15.docroot.url" value="https://download.java.net/java/early_access/jdk15/docs"/>
+  <property name="java15.docroot.url" value="https://docs.oracle.com/en/java/javase/15/docs"/>
   <property name="java16.docroot.url" value="https://download.java.net/java/early_access/jdk16/docs"/>
   <!-- Default jdk doc location (latest stable LTS release seems best) -->
   <property name="java.docroot.url"   value="${java11.docroot.url}"/>
@@ -427,6 +427,7 @@
       <arg value="-quiet"/>
       <arg value="-XDignore.symbol.file=true"/>
       <arg value="-html5"/>
+      <arg value="-Xdoclint:all,-missing"/>
       <arg value="--patch-module=java.base=${src.dir}"/>
       <arg value="--frames" if:set="use-frames"/>
       <arg value="--override-methods=summary"/>
@@ -655,6 +656,17 @@
     </antcall>
   </target>
 
+  <target name="docs16">
+    <antcall>
+      <param name="java.runtime.target" value="16"/>
+      <param name="build.main.javac" value="${javac16}"/>
+      <param name="build.main.javadoc" value="${javadoc16}"/>
+      <param name="build.main.javadoc.source" value="16"/>
+      <target name="clean"/>
+      <target name="docs"/>
+    </antcall>
+  </target>
+
 
   <target name="configure-compiler">
     <fail message="ant version too old">
@@ -742,6 +754,7 @@
   <property name="errorprone.jsr166.user.flags" value=""/>
   <property name="errorprone.jsr166.flags"
             value="-Xep:HashtableContains:OFF
+                   -Xep:PreferJavaTimeOverload:OFF
                    -Xep:JdkObsolete:OFF
                    -Xep:MissingOverride:OFF
                    -Xep:MissingFail:OFF
@@ -761,6 +774,7 @@
   <property name="errorprone.jsr166.test.flags"
             value="-Xep:StringSplitter:OFF
                    -Xep:BoxedPrimitiveConstructor:OFF
+                   -Xep:UnnecessaryParentheses:OFF
                    -Xep:ModifyingCollectionWithItself:OFF"/>
   <!-- ant -emacs errorprone |& grep -EA1 '(warning|error):|warnings' -->
   <target name="errorprone"