src/share/classes/java/util/Hashtable.java

@@ -24,10 +24,11 @@
  */
 
 package java.util;
 
 import java.io.*;
+import java.util.concurrent.ThreadLocalRandom;
 import java.util.function.BiConsumer;
 import java.util.function.Function;
 import java.util.function.BiFunction;
 
 /**

@@ -217,11 +218,12 @@
      * Return an initial value for the hashSeed, or 0 if the random seed is not
      * enabled.
      */
     final int initHashSeed() {
         if (sun.misc.VM.isBooted() && Holder.USE_HASHSEED) {
-            return sun.misc.Hashing.randomHashSeed(this);
+            int seed = ThreadLocalRandom.current().nextInt();
+            return (0 != seed) ? seed : 1;
         }
         return 0;
     }
 
     private int hash(Object k) {

@@ -1204,12 +1206,13 @@
         // Read in the length, threshold, and loadfactor
         s.defaultReadObject();
 
         // set hashMask
         if (Holder.USE_HASHSEED) {
+            int seed = ThreadLocalRandom.current().nextInt();
             Holder.UNSAFE.putIntVolatile(this, Holder.HASHSEED_OFFSET,
-                    sun.misc.Hashing.randomHashSeed(this));
+                                          0 != seed ? seed : 1);
         }
 
         // Read the original length of the array and number of elements
         int origlength = s.readInt();
         int elements = s.readInt();