diff -r d382dacfd73f -r 9926996eca2d rt/emul/mini/src/main/java/java/net/URLStreamHandler.java
--- a/rt/emul/mini/src/main/java/java/net/URLStreamHandler.java	Tue Feb 26 16:54:16 2013 +0100
+++ b/rt/emul/mini/src/main/java/java/net/URLStreamHandler.java	Thu Oct 31 11:23:54 2013 +0100
@@ -25,6 +25,8 @@
 
 package java.net;
 
+import java.io.IOException;
+
 
 /**
  * The abstract class <code>URLStreamHandler</code> is the common
@@ -62,7 +64,7 @@
      * @exception  IOException  if an I/O error occurs while opening the
      *               connection.
      */
-//    abstract protected URLConnection openConnection(URL u) throws IOException;
+    abstract protected URLConnection openConnection(URL u) throws IOException;
 
     /**
      * Same as openConnection(URL), except that the connection will be