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Скачать или смотреть How to Print a Full Line of Text in Java from an Input File

  • vlogize
  • 2025-04-03
  • 3
How to Print a Full Line of Text in Java from an Input File
How to print a full line of text in java (from input file)javastringinputprintingnewline
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Описание к видео How to Print a Full Line of Text in Java from an Input File

Discover how to read and print entire lines from a text file in Java instead of individual words. Follow our step-by-step guide for better output formatting.
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This video is based on the question https://stackoverflow.com/q/69528317/ asked by the user 'Bella' ( https://stackoverflow.com/u/17127564/ ) and on the answer https://stackoverflow.com/a/69528590/ provided by the user 'tquadrat' ( https://stackoverflow.com/u/1554195/ ) 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 to print a full line of text in java (from input file)

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.

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How to Print a Full Line of Text in Java from an Input File

Java is a powerful programming language that allows developers to interact with files effortlessly. However, beginners often encounter common hurdles, such as reading entire lines from a file rather than individual words. In this guide, we’ll address the issue of printing lines of text from an input file and explore practical solutions to achieve this.

The Problem: Printing Individual Words Instead of Lines

If you’ve been experimenting with file input in Java, you might have faced a situation where your code prints text as separate words instead of complete lines. Consider the following scenario:

You have a text file with content like this:

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

However, your current Java code outputs the content like this:

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

This makes it difficult to read and represents unwanted fragmentation of your text.

The Solution: Modifying Your Code

To resolve this issue, you need to adjust the way you read lines from the input file. Below are two effective methods to accomplish this.

Method 1: Using Scanner with a Custom Delimiter

By default, Scanner treats whitespace as a delimiter, breaking text into words. To print entire lines, we can modify the delimiter to recognize the newline character (\n). Here’s how to do it:

Original Code Snippet:

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

Updated Code Snippet:

Simply replace the line initializing the Scanner:

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

Method 2: Using java.nio.file.Files.lines()

An alternative approach is to use Java's Files.lines() method, which reads all lines from a file as a stream. Here’s how it works:

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

Method 3: Using BufferedReader

If you prefer a more traditional approach, BufferedReader can also be used to read lines efficiently:

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

Conclusion

Printing entire lines from a file in Java is a straightforward task once you understand how to manage your input properly. By using a custom delimiter, leveraging Files.lines(), or employing BufferedReader, you can achieve a much cleaner output that mirrors the original file structure. These methods not only help you as a beginner in Java but will also enhance your programming skills.

Feel free to try these methods and choose the one that best fits your coding style. Happy coding!

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