Hacktoberfest, in its 8th year, is a month-long celebration of open source software run by DigitalOcean. During the month of October, we invite you to join open-source software enthusiasts, beginners, and the developer community by contributing to open-source projects. You can do this in a variety of ways:
- Prepare and share your project for collaboration
- Contribute to the betterment of a project via pull requests
- Organize an event
- Mentor others
- Donate directly to open source projects
Calculator.
You can add or correct the code in MainActivity.java file, and you can send a pull request for the same. If it is a valid correction or addition then, your pull request will be merged.
Contains some beginner level projects in Java Programming Language