URL(URL context, String spec) hangs with the following input with build 71. It shows MalformedURLException with build70 and previous builds.

How to reproduce:

 URL contexturl1 = new URL("file:./");
 System.out.println("ToString context url : " + contexturl1.toString());
 URL u4 = new URL(contexturl1, "../images/foo.gif");

 System.out.println("ToString u4 : " + u4.toString());


  With build71 its not coming out of "URL u4 = new URL(contexturl1, "../images/foo.gif"); " line.
 

Output with build71:

ToString context url : file:./


Output with build 70:

ToString context url : file:./
java.net.MalformedURLException: context contains relative path: file:./
        at java.net.URL.<init>(URL.java:484)
        at java.net.URL.<init>(URL.java:390)
        at TestURL1.main(TestURL1.java:113)