The following:
http://hg.openjdk.java.net/jdk9/dev/jdk/file/6dea581453d7/src/java.base/share/classes/javax/crypto/CryptoPolicyParser.java#l49
Has open < and > characters, for normal doc production this is not an issue as this class in package private,
however for folks trying to build with -package or -private javadoc options, this issue will likely to cause issues.

The fix is simple either replace those characters with HTML entities
or surround that example snippet with {@code ......}

A possible patch
diff --git a/src/java.base/share/classes/javax/crypto/CryptoPolicyParser.java b/src/java.base/share/classes/javax/crypto/CryptoPolicyParser.java
--- a/src/java.base/share/classes/javax/crypto/CryptoPolicyParser.java
+++ b/src/java.base/share/classes/javax/crypto/CryptoPolicyParser.java
@@ -46,10 +46,12 @@
  *
  * The format of a permission entry in the jurisdiction policy file is:
  *
+ * {@code
  * permission <crypto permission class name>[, <algorithm name>
  * [[, <exemption mechanism name>][, <maxKeySize>
  * [, <AlgrithomParameterSpec class name>, <parameters
  * for constructing an AlgrithomParameterSpec object>]]]];
+ * }
  *
  * @author Sharon Liu
  *