Скачать или смотреть How to Use SimpleDateFormat for Desired Date Formats in Java

Learn how to format dates in Java to achieve a specific format such as `13/6/2021` using `SimpleDateFormat`. This comprehensive guide will provide you with the necessary steps and code snippets.
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How to Format Dates in Java: Obtaining Desired Date Structures

When dealing with dates in Java, it's common to require them to adhere to specific formats. For instance, while you might want a date represented as 13/06/2021, you may find that your current setup yields a format like 12 Jul, 2021. This query resonates with many developers who face challenges in achieving precise date formatting with Java's date utilities.

In this post, we delve into how to leverage the SimpleDateFormat class to achieve your desired date representation. We will show you how to accurately format dates so that they display exactly as you need them.

Understanding SimpleDateFormat

SimpleDateFormat is a class in Java that allows you to format and parse dates in a locale-sensitive manner. The formatting of the date is determined by patterns, which you design based on your requirements.

Why is Your Current Format Returning Month Names?

In your original code, you may have inadvertently set a pattern that includes month names rather than numbers. This happens when using patterns like "MM/dd/yyyy" or layout settings that automatically translate month numbers to names.

Constructing the Correct Format

To achieve the desired format of dd/MM/yyyy, follow these steps:

Step 1: Import Necessary Classes

You must ensure you have the relevant classes imported at the top of your Java file as follows:

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Step 2: Create a LocalDateTime Object

This step retrieves the current date and time:

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Step 3: Declare Your DateTimeFormatter

Use the ofPattern method to define your desired format:

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Step 4: Format Your Date

Now you can format your date according to the pattern you specified:

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Step 5: Display the Result

Lastly, print out both the unformatted and formatted date:

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Example Code

Here is the complete code snippet that implements the above steps:

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Output Explanation

When you run the code, it will output something similar to this:

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This confirms that you can now represent the date exactly in your desired format: 13/06/2021.

Conclusion

In summary, by utilizing LocalDateTime and DateTimeFormatter, you can easily format dates to match your expectations in a simple and effective way. Don't forget that date formatting is not only useful for console applications but also significant when displaying information in personal or commercial software solutions.

Now, go ahead and modify any date strings in your application to fit your user interface needs by implementing what we've discussed!