Hashmap code done for project file

I am looking for a developer who can write a hashmap code for my project file written in Java. The code should be able to perform specific functions according to my requirements. I need this project to be completed within a week.

Skills and Experience Required:
- Proficiency in Java programming language
- Strong knowledge and experience in hashmap implementation
- Ability to understand and implement specific functions using hashmap
- Time management skills to ensure completion within the given timeline