hasAssociation fails when invoked after requestAssociation.

Example Code:
       String mime = "x-application/aaa";
        String [] exts = {"aaa"};
        is.removeAssociation(mime, exts);
        boolean result = is.requestAssociation(mime,exts);
System.out.println(is.hasAssociation(mime,exts));

TestCase:
http://jdeploy01.india.sun.com:8080/JavawsMustangIntegTest/integrationService/RequestAssociationMimeFileExtn.jnlp