A naukri.com initiative
Medium
1d
120
Image Credit: Medium
Creating User Menus in Java with Loops and Switch
- A working menu stays active by repeating the same code until the user chooses to exit.
- Loops in Java follow simple rules, with while loop running as long as a condition is true and do-while loop running the body at least once before checking the condition.
- A do-while loop is often smoother for handling menus as it does not require preloading the condition.
- The switch statement in Java is used to match user's choice to a fixed set of possible actions in menu-driven programs.
- Validation is crucial in menu code to handle input errors and ensure stability by catching bad input early.
- Using hasNextInt() before reading a number helps prevent program crashes when user input does not match the expected type.
- In console menus, input checks are essential for building well-built interfaces and safer tools by expecting user mistakes.
- API keys and authentication play a role in real access controls for remote systems, ensuring trust in user requests.
- Implementing a basic login gate inside a menu can mimic user-based access control for protected data.
- Understanding and implementing these menu structures early can lead to clear, safe, and enforced rules for user interactions in programs.
Read Full Article
7 Likes
For uninterrupted reading, download the app