HasAssociation return false when there are two or more association and mime type.

Steps to reproduce:
create a JNLP with following entry.
     <association extensions="abc" mime-type="x-application/abc"/>
     <association extensions="xyz" mime-type="x-application/xyz"/>

Invoke hasAssociation -
        String mime = "x-application/abc";
        String []exts = {"abc"};
        String mime1 = "x-application/xyz";
        String []exts1 = {"xyz"};

        boolean result = is.hasAssociation(mime,exts);
        boolean result1 = is.hasAssociation(mime1,exts1);

Expected result and resutl1 to be true.