Скачать или смотреть How to Fix the Wrong Input Statement in Your Java Calculator Code

Learn how to eliminate the annoying `Wrong Input` message from your Java calculator application with this easy-to-follow guide.
---
This video is based on the question https://stackoverflow.com/q/63583278/ asked by the user 'Coding millenia' ( https://stackoverflow.com/u/14013740/ ) and on the answer https://stackoverflow.com/a/63583463/ provided by the user 'Som' ( https://stackoverflow.com/u/5846981/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How can I get rid of the "wrong input " statement coming along my answer

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
How to Fix the Wrong Input Statement in Your Java Calculator Code

Are you struggling with an annoying issue in your Java calculator application? If you’ve ever encountered the message Wrong input! appearing even when you provide the correct input, you're not alone. This common mistake can occur in simple Java programs, especially when using conditional statements. In this guide, we'll walk you through the solution to eliminate that message from your output.

Understanding the Problem

In your Java code, you have a method called choice that determines what action to take based on user input — either addition or subtraction. However, you’ve noticed that after performing a calculation, the program still prints out Wrong input!, even if the input was valid. Here’s the output you’re worried about:

[[See Video to Reveal this Text or Code Snippet]]

This happens because of how conditional statements are structured in your choice method.

Breaking Down the Solution

To solve this problem, we need to adjust the conditional logic in your choice method. The goal is to ensure that only one of the conditions (for addition or subtraction) can be true at any given time.

Step-by-step Changes

Modify the choice Method: You need to change the if statements inside the choice method to ensure that if the first condition (choose == 1) is true, the second condition (choose == 2) will not be checked.

Use Else-If: Change the first if statement's counterpart to else if. This will help in preventing the code from executing the last else block when the first condition is satisfied.

Here’s how the updated method should look:

[[See Video to Reveal this Text or Code Snippet]]

Sample Output After the Fix

After making this change, your output will be clean and free from unwanted messages:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By employing a simple adjustment in your conditional logic, you can ensure that your Java calculator application runs smoothly without any erroneous Wrong input! messages. Always remember to structure your if statements carefully to prevent unintended consequences.

Happy coding, and may your programming journey be free from pesky bugs! If you have further questions or need more tips, feel free to leave a comment below.