diff -r a7f16447085e -r 48e480e56aad src/java.base/share/classes/java/lang/UnknownError.java
--- a/src/java.base/share/classes/java/lang/UnknownError.java	Tue Sep 24 10:04:13 2019 +0000
+++ b/src/java.base/share/classes/java/lang/UnknownError.java	Tue Sep 24 09:43:43 2019 +0100
@@ -38,14 +38,14 @@
     private static final long serialVersionUID = 2524784860676771849L;
 
     /**
-     * Constructs an <code>UnknownError</code> with no detail message.
+     * Constructs an {@code UnknownError} with no detail message.
      */
     public UnknownError() {
         super();
     }
 
     /**
-     * Constructs an <code>UnknownError</code> with the specified detail
+     * Constructs an {@code UnknownError} with the specified detail
      * message.
      *
      * @param   s   the detail message.