diff -r bf2f2560dd53 -r 4fa75d8ad418 src/java.base/share/classes/java/lang/Float.java
--- a/src/java.base/share/classes/java/lang/Float.java	Sat Dec 08 18:52:57 2018 -0500
+++ b/src/java.base/share/classes/java/lang/Float.java	Sun Dec 09 12:36:24 2018 -0500
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1994, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1994, 2018, 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
@@ -25,6 +25,11 @@
 
 package java.lang;
 
+import java.lang.invoke.MethodHandles;
+import java.lang.constant.Constable;
+import java.lang.constant.ConstantDesc;
+import java.util.Optional;
+
 import jdk.internal.math.FloatingDecimal;
 import jdk.internal.HotSpotIntrinsicCandidate;
 
@@ -45,7 +50,8 @@
  * @author  Joseph D. Darcy
  * @since 1.0
  */
-public final class Float extends Number implements Comparable<Float> {
+public final class Float extends Number
+        implements Comparable<Float>, Constable, ConstantDesc {
     /**
      * A constant holding the positive infinity of type
      * {@code float}. It is equal to the value returned by
@@ -982,6 +988,31 @@
         return Math.min(a, b);
     }
 
+    /**
+     * Returns a nominal descriptor for this instance, which is the instance
+     * itself.
+     *
+     * @return an {@link Optional} describing the {@linkplain Float} instance
+     * @since 12
+     */
+    @Override
+    public Optional<Float> describeConstable() {
+        return Optional.of(this);
+    }
+
+    /**
+     * Resolves this instance as a {@link ConstantDesc}, the result of which is
+     * the instance itself.
+     *
+     * @param lookup ignored
+     * @return the {@linkplain Float} instance
+     * @since 12
+     */
+    @Override
+    public Float resolveConstantDesc(MethodHandles.Lookup lookup) {
+        return this;
+    }
+
     /** use serialVersionUID from JDK 1.0.2 for interoperability */
     private static final long serialVersionUID = -2671257302660747028L;
 }