diff -r 000000000000 -r 959103a6100f test/tools/javac/synthesize/Double.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/tools/javac/synthesize/Double.java	Wed Apr 27 01:34:52 2016 +0800
@@ -0,0 +1,18 @@
+package java.lang;
+
+public class Double extends Number
+{
+    public static Double valueOf(double v) {
+        return new Double(v);
+    }
+
+    public Double(double v) {
+        value = v;
+    }
+
+    public double doubleValue() {
+        return value;
+    }
+
+    private double value;
+}