--- a/jdk/src/share/classes/java/util/jar/JarFile.java	Thu Sep 19 10:40:16 2013 +0800
+++ b/jdk/src/share/classes/java/util/jar/JarFile.java	Thu Sep 19 10:41:29 2013 +0800
@@ -53,6 +53,13 @@
  * or method in this class will cause a {@link NullPointerException} to be
  * thrown.
  *
+ * If the verify flag is on when opening a signed jar file, the content of the
+ * file is verified against its signature embedded inside the file. Please note
+ * that the verification process does not include validating the signer's
+ * certificate. A caller should inspect the return value of
+ * {@link JarEntry#getCodeSigners()} to further determine if the signature
+ * can be trusted.
+ *
  * @author  David Connelly
  * @see     Manifest
  * @see     java.util.zip.ZipFile