a427b021_Rebuild_Status___FedoraProject__Issue
[Explanation] Java 7 has completely removed support for com.sun.image.codec.* classes (deprecated since Java 1.4). [How to fix] These are probably the most complex of all issues to fix. The first thing is to check if upstream has fixed it and then just backport that fix. If not fixed upstream, patch to use ImageIO instead, as specified here. [Issue] 
com.sun.image.codec
Java7 Package Rebuild Status - FedoraProject
Issue