How to Remove All Line Breaks in a String in Java, Handling Both Windows and Linux Endings?

Removing Line Breaks from Files in Java

To effectively remove all line breaks from a string in Java, ensuring compatibility across both Windows and Linux systems, you must consider the distinct line endings used by these operating systems.

The provided code attempt, text.replace("n", ""), is inadequate as it addresses only one line break format. To account for both Windows and Linux line endings, you need to perform a double replacement operation:

<code class="java">String text = readFileAsString("textfile.txt");
text = text.replace("\n", "").replace("\r", "");</code>

This approach explicitly replaces both line break characters, "n" (new line) for Linux and "r" (carriage return) for Windows, resulting in a string without any line breaks.

Additionally, to obtain the appropriate line ending for any given environment, you can use the following:

<code class="java">String lineSeparator = System.getProperty("line.separator");</code>

This lineSeparator property provides the correct line ending format based on the current system.

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