I can't answer to whether it's doable in a month, but it does sound interesting. If you can get the programming & GUI right, it's definitely a good piece of your portfolio. By the time you are looking for a java job, you should have other projects that are java-based. The python program will show where you started and the java projects will show your progression.
An employer will value that you took the initiative and had the curiosity to build a project outside of school. You'd be surprised how many graduates i had resumes from that had no portfolio. Plus the ability t learn multiple programs will make you more valuable. It shows your capacity and interest in learning, willingness to change and ability to apply logic in various contexts.