JDK 9 RFR of JDK-8155963: Fix deprecation warning in windows java.net implementation

[joe darcy]

Hello,

Please review the patch below is address windows-specific code which was 
overlooked on the cleanup passes ahead of fixing JDK-6850612: Deprecate 
Class.newInstance since it violates the checked exception language contract.

Thanks,

-Joe


diff -r 03453120a011 
src/java.base/windows/classes/java/net/DefaultDatagramSocketImplFactory.java
--- 
a/src/java.base/windows/classes/java/net/DefaultDatagramSocketImplFactory.java 
Tue May 03 10:40:54 2016 -0700
+++ 
b/src/java.base/windows/classes/java/net/DefaultDatagramSocketImplFactory.java 
Tue May 03 12:12:09 2016 -0700
@@ -90,7 +90,9 @@
          throws SocketException {
          if (prefixImplClass != null) {
              try {
-                return (DatagramSocketImpl) prefixImplClass.newInstance();
+                @SuppressWarnings("deprecation")
+                Object result = prefixImplClass.newInstance();
+                return (DatagramSocketImpl) result;
              } catch (Exception e) {
                  throw new SocketException("can't instantiate 
DatagramSocketImpl");
              }