diff -r ab558f578f30 -r c2a5d2de5253 jdk/src/java.base/share/classes/java/util/zip/ZipUtils.java
--- a/jdk/src/java.base/share/classes/java/util/zip/ZipUtils.java	Fri Jul 22 16:05:23 2016 +0100
+++ b/jdk/src/java.base/share/classes/java/util/zip/ZipUtils.java	Fri Jul 22 16:32:48 2016 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -38,6 +38,9 @@
     // used to adjust values between Windows and java epoch
     private static final long WINDOWS_EPOCH_IN_MICROSECONDS = -11644473600000000L;
 
+    // used to indicate the corresponding windows time is not available
+    public static final long WINDOWS_TIME_NOT_AVAILABLE = Long.MIN_VALUE;
+
     /**
      * Converts Windows time (in microseconds, UTC/GMT) time to FileTime.
      */
@@ -54,6 +57,11 @@
     }
 
     /**
+     * The upper bound of the 32-bit unix time, the "year 2038 problem".
+     */
+    public static final long UPPER_UNIXTIME_BOUND = 0x7fffffff;
+
+    /**
      * Converts "standard Unix time"(in seconds, UTC/GMT) to FileTime
      */
     public static final FileTime unixTimeToFileTime(long utime) {