What is the system lineSeparator() in Java?

This static lineSeparator() function helps to return the line separator string. This string is system-dependent and returns the same value all the time.

Syntax

public static String lineSeparator()

Parameters

NA: This function does not take any argument value.

Return Value

  • In Windows-based systems, this function will return \r\n or a positive integer.

  • In UNIX-based systems, the lineSeparator() method will return \n or a positive integer.

  • NullPointerException: It will throw null pointer exception when the string is null.

Example

The code below helps to understand the working of the lineSeparator() method. It will return a number when the string is not null which will be the line separator.

import java.io.*;
import java.lang.*;
import java.nio.channels.Channel;
// Main class
public class EdPresso{
        // main method
    public static void main(String[] args) 
            throws NullPointerException, IOException
    {       // calling lineSeparatir()
        String str = System.lineSeparator();
        for (char ch : str.toCharArray()) {
            System.out.println((int)ch);
        }
    }
}

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