Скачать или смотреть Converting a String with a Date of the Week in Java: Solved!

Discover how to easily convert a string representing a date of the week into a Java LocalDateTime object, including tips on handling locale issues.
---
This video is based on the question https://stackoverflow.com/q/69986166/ asked by the user 'Natali' ( https://stackoverflow.com/u/12422340/ ) and on the answer https://stackoverflow.com/a/69986385/ provided by the user 'milt_on' ( https://stackoverflow.com/u/6795324/ ) 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: Convert string with date of a week

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.
---
Converting a String with a Date of the Week in Java

If you're a Java developer, you might have faced issues when attempting to convert a string containing a date into a date-time object. One common scenario involves strings formatted with the day of the week, such as “Mon, 11-12-2021 - 12:00”. In this post, we'll discuss a specific case involving a format parsing error you may encounter and how to resolve it effectively.

The Issue at Hand

Consider the scenario where you attempt to convert a string formatted as follows:

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

When executing this code, you might face an error like:

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

This error indicates that the Java parser is unable to interpret the provided string correctly. A frequent cause of this problem is mismatched or unsatisfactory locale settings in your Java environment.

Solution Steps

Let’s break down the solution into clear, manageable steps. Below are the modifications you might need to make:

1. Verify the Locale Settings

Depending on your system’s locale, the DateTimeFormatter might expect the day of the week to be in a different language. If your locale is not set to English, “Mon” may not be recognized, leading to the parse exception.

2. Modify Your Code

To ensure that the day of the week is correctly interpreted regardless of locale, you can specify the locale explicitly while defining the DateTimeFormatter. Below is the modified code:

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

3. Verify the Output

Upon successfully running the revised code, you should see the output as follows:

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

This output signifies that the conversion from the string to LocalDateTime was executed successfully, and it shows the date and time formatted accurately.

Conclusion

In summary, when converting strings with date information in Java, always be mindful of locale settings, especially when dealing with localized strings like days of the week. By explicitly specifying Locale.ENGLISH in your DateTimeFormatter, you can avoid common parsing issues. With these steps, you can confidently handle date-time parsing in Java and eliminate frustrating errors along the way.

Remember, a small tweak can make a significant difference—happy coding!