Use \s in Java

Sheeraz Gul Mar 24, 2022

Java Java Regex

This tutorial will discuss and demonstrate the use of \\s in Java.

Use `\s` as Regular Expression in Java

\\s is a regular expression in Java used for white space characters. Regular expressions are the sequence of characters used to develop a pattern for data.

We use patterns sometimes when we search data in the text, and \\s is used in those patterns when space is required.

We use double backslash because Java syntax does not support the single backslash. In reality, the syntax for a single whitespace character is \s.

Example:

package delftstack;

public class Reg_Expression {
    public static final String Demo = "Hello! this is delftstack.com";

    public static void main(String[] args) {
        // Print the original String
        System.out.println("This is the Original String: ");
        System.out.println(Demo);

        // replace all \\s whitespaces with \t tabs
        System.out.println("This is the String \\s replaced with \\t: ");
        System.out.println(Demo.replaceAll("\\s", "\t"));

        //Split the string at \\s means the spaces
        String[] Demo_Split = (Demo.split("\\s"));
        System.out.println("This is the String split at \\s: ");
        for (String Print_String : Demo_Split) {
            System.out.println(Print_String);
        }
    }
}

The code above manipulated the string spaces using \\s. First, it replaced the spaces with tabs and split the string at spaces.

Output:

This is the Original String:
Hello! this is delftstack.com
This is the String \s replaced with \t:
Hello!	this	is	delftstack.com
This is the String split at \s:
Hello!
this
is
delftstack.com

Author: Sheeraz Gul

Sheeraz is a Doctorate fellow in Computer Science at Northwestern Polytechnical University, Xian, China. He has 7 years of Software Development experience in AI, Web, Database, and Desktop technologies. He writes tutorials in Java, PHP, Python, GoLang, R, etc., to help beginners learn the field of Computer Science.

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Use \s as Regular Expression in Java

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Use `\s` as Regular Expression in Java